valencia theater sold 487 tickets for a play. tickets cost $14 per student with valid valencia identification and $25 per non-student. if total receipts were $8391, how many valencia student tickets and non-student tickets were sold?

Answers

Answer 1

354 Valencia student tickets and 133 non-student tickets were sold.

Let's use algebra to solve the problem. Let

x be the number of Valencia student tickets sold

y be the number of non-student tickets sold

We know that

x + y = 487 (the total number of tickets sold is 487)

14x + 25y = 8391 (the total receipts from ticket sales is $8391)

We can use the first equation to express one of the variables in terms of the other. For example, we can solve for y

y = 487 - x

Here we have to use the substitution method, we can then substitute this expression for y into the second equation

14x + 25(487 - x) = 8391

Simplifying and solving for x

14x + 12275 - 25x = 8391

-11x = -3884

x = 354

So, 354 Valencia student tickets were sold. We can use the first equation to find y

x + y = 487

354 + y = 487

y = 133

So, 133 non-student tickets were sold.

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Related Questions

how many ways can you select a committee of size 3 from a group of 15 people, where one person will be president, one will be vice president, and one will be treasurer?

Answers

There are 13,225 different ways to select a committee of size 3 from a group of 15 people, where one person will be president, one will be vice president, and one will be treasurer.

To calculate this, we can use a combination formula. The formula for combinations is nCr = n! / (r! * (n - r)!), where n is the size of the group and r is the number of people in the committee.

In this case, n = 15 and r = 3.

Using this formula, we can calculate that there are 15! / (3! * (15 - 3)!) = 13,225 different ways to select a committee of size 3 from a group of 15 people, where one person will be president, one will be vice president, and one will be treasurer.

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suppose the first and the last page of the document must be printed in color, and only two printers are able to print in color. the two color printers can also print black-and-white. how many ways are there for the 100 pages to be assigned to the four printers?

Answers

If the first and last pages of a document must be printed in color, and only two printers can print in color, then there are a total of 4⁹⁹ ways that 100 pages can be assigned for printing to four printers.

The fundamental principle of counting says that if there are p ways to do one thing and q ways to do another thing, then there are p×q ways to do both things. Number of printers that is able to print in color = 2

Number of colors printed by printers = 2

We have to determine the number of ways are there for the 100 pages to be assigned to the four printers. Now, consider there are no restrictions. Let's break this problem into two parts. First, we have to print 2 pages in color and there are only two color printers. So, number of ways to print the first and the last page of the document = 2²

= 4

Number of remaining pages of document = 98

Number of avaliabile printers = 4

Now, second part, we have only 98 pages (out of 100 pages, 2 colors pages are already printed). Each of these 98 pages can be assigned to a printer in 4 ways. So, number of ways to print remaining 98 pages of document = 4⁹⁸.

Using the counting principle, number of ways for printing the 100 pages by four printers = 2² × 4⁹⁸

= 4 × 4⁹⁸ = 4⁹⁹

Hence, required number of ways are 4⁹⁹.

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there is a three term arithmetic sequence with the first term 9. if you add 2 to the second term and 20 to the third term it forms a geometric sequence. what is the smallest number the third term in the geometric sequence could be?

Answers

The geometric sequence is 9 + 2 + 20 = 29.

The smallest number the third term in the geometric sequence can be is 29.

This is because when you add 2 to the second term and 20 to the third term of the three-term arithmetic sequence with a first term of 9,

the third term of the geometric sequence is 9 + 2 + 20 = 29.

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select a random sample of size 2 by writing the five numbers in this population on slips of paper, mixing them, and then selecting two. calculate the mean for your sample.

Answers

The mean for the sample is 14.5.

We are asked to select a random sample of size 2 by writing the five numbers in this population on slips of paper, mixing them, and then selecting two. We then have to calculate the mean for the sample. The given numbers are: 12, 17, 8, 13, and 20. Therefore, there are five numbers in the population.

Now, we have to choose any two numbers randomly from the population. Let us suppose that we select 12 and 17 randomly from the population. Therefore, the sample will be {12, 17}. Now, we have to calculate the mean of the sample.

The formula to calculate the mean is: mean = sum of all numbers in the sample / total number of items in the sample. The sum of 12 and 17 is 12 + 17 = 29. Therefore, the sum of all numbers in the sample is 29. Also, the total number of items in the sample is 2.

Therefore, we can calculate the mean as: mean = 29 / 2mean = 14. 5. Therefore, the mean for the sample is 14.5.

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The plane traveled 6 mores miles after passing the George Washington Bridge, descending at a 2° angle before landing in the Hudson River.
5a) At what altitude (in feet) did the airplane cross over the G.W. Bridge (e)?

Answers

The altitude of the plane at the George Washington Bridge is approximately 0.2095 miles (or 1,106 feet) above sea level, plus whatever the height of the bridge is.

What is altitude?

Altitude refers to the height of an object or location above a specific reference point, usually the Earth's sea level. In aviation, altitude is often used to describe the height of an aircraft above sea level, and is measured in feet or meters.

What is trigonometry?

Trigonometry is a branch of mathematics that deals with the relationships between the sides and angles of triangles. It involves the study of trigonometric functions, which are functions of an angle, and are used to relate the angles and sides of a right triangle.

In the given question,

To solve this problem, we need to use trigonometry and the fact that the plane descended at a 2° angle. Let's assume that the altitude of the plane at the George Washington Bridge is h feet.

Using trigonometry, we know that the tangent of the angle of descent is equal to the difference in altitude divided by the horizontal distance traveled. In this case, we have:

tan(2°) = (h - e) / 6

To solve for h, we need to isolate it on one side of the equation. Multiplying both sides by 6, we get:

6 tan(2°) = h - e

Adding e to both sides, we get:

h = 6 tan(2°) + e

We can use a calculator to find the tangent of 2°, which is approximately 0.03492. Substituting this value and the given distance of 6 miles into the equation, we get:

h = 6(0.03492) + e

h = 0.2095 + e

Therefore, the altitude of the plane at the George Washington Bridge is approximately 0.2095 miles (or 1,106 feet) above sea level, plus whatever the height of the bridge is.

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Tanya painted a mural that was 8 feet tall. The area of the mural was 224 square feet. What is the length of Tanya’s mural?

Answers

The length of Tanya's mural is 28 feet.

What is the length of Tanya’s mural?

A rectangle is a 2-dimensional shape with parallel opposite sides equal to each other and four angles are right angles.

Area of a rectangle is expressed as;

Area = length × width

We know that the area of Tanya's mural is 224 square feet, and the height of the mural is 8 feet.

So we can use these values to find the length of the mural:

Area = length × width

224 = length × 8

To solve for the length, we can divide both sides of the equation by 8:

length = 224 ÷ 8

length = 28 feet

Therefore, the dimension of the length is 28 feet.

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The figure below is composed of a regular hexagon and three congruent triangles. What is the area of the figure rounded to the nearest square meter?

Answers

The area of the figure rounded to the nearest square meter is 97 m². So correct option is A.

Describe regular pentagon?

With five equal sides and five equal angles, a regular pentagon is a polygon. In other words, a regular pentagon's sides and angles are all congruent. It is a closed, two-dimensional object that is categorized as a sort of polygon since it is constructed of straight line segments.

Regular pentagons have a number of distinctive features, including:

A regular pentagon has 108 degree internal angles that are all equal.

A standard pentagon's outside angles are all 72 degrees in angle.

A regular pentagon is divided along its diagonals into three smaller triangles, two of which are congruent.

Regular pentagons are prevalent in a variety of fields, including geometry, architecture, and the arts.

First, you would need to determine the side length of the regular hexagon. This can be done using the radius of the circumscribed circle, which is given as 5 meters. The side length of the hexagon can be calculated using the formula:

s = r * √(3)

where s is the side length and r is the radius of the circumscribed circle. Plugging in the given value for r, we get:

s = 5 * √(3)

simplifying, we get:

s ≈ 8.7 meters

Next, you would need to calculate the area of one of the congruent triangles. This can be done using the formula:

A = (1/2) * b * h

where A is the area of the triangle, b is the base, and h is the height. The base of the triangle is equal to one side of the hexagon, which we just calculated to be approximately 8.7 meters. To find the height, we can draw an altitude from one vertex of the triangle to the opposite side, creating a 30-60-90 right triangle. The height is equal to the shorter leg of this triangle, which can be calculated using the formula:

h = (1/2) * s * √(3)

Plugging in the value for s, we get:

h ≈ 7.5 meters

Now we can calculate the area of one of the triangles:

A = (1/2) * 8.7 * 7.5 ≈ 32.6 square meters

Finally, we can calculate the total area of the figure by adding the area of the hexagon to three times the area of one of the triangles:

A = 6 * (s²) * √(3)/4 + 3 * A

Plugging in the values we calculated, we get:

A ≈ 96.9 square meters

Rounding to the nearest square meter, we get:

A ≈ 97 square meters

Therefore, the answer is A. 97 m².

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what is the center of dilation

Answers

The center of a dilation is a fixed point in the plane about which all points are expanded or contractedAnswer:

Step-by-step explanation:

a population has a mean of 50 and a standard deviation of 10. if a random sample of 64 is taken, what is the probability that the sample mean is greater than 52?

Answers

The probability that the sample mean is greater than 52 is 5.5%.

Given population mean (μ) = 50 and standard deviation (σ) = 10Sample size (n) = 64 Sample mean (X-bar) = 52The formula for finding the probability of a sample mean is greater than a given value is:

P ( X-bar > 52 ) = P ( z > (52-50) / (10/√64) ) = P ( z > 1.6 )The formula for finding the probability of z-score is:

P ( z > 1.6 ) = 1 - P ( z < 1.6 )Now, we need to find the value of P ( z < 1.6 ) from the standard normal distribution table.P ( z < 1.6 ) = 0.9452 (approx)Now, substitute this value in the above equation, we get:

P ( z > 1.6 ) = 1 - 0.9452 = 0.0548 .Therefore, the probability that the sample mean is greater than 52 is 0.0548 or approximately 5.5%.

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5 Ahmid used the total number of people who bought a
hot dog and the total number of people who did not
buy a hot dog to make the relative frequency table
below. Does it provide evidence that there is an
association between buying a hot dog and buying a
drink at a baseball game? Explain why or why not.
Drink
No Drink
Total
Hot Dog
70.2%
29.8%
100%
No Hot Dog
38.5%
61.5%
100%

Answers

The frequency table shows that there is a relationship between buying a hot dog and buying a drink at a baseball game. The huge 70.2% is evidence of this.

What does the table show?

The frequency table is meant to show the relationship between variables. Of all the values provided, the relationship with the highest percentage is 70.2%.

This shows that the number of people who purchased a hot dog while also purchasing a drink constituted the highest number. None of the figures come close to this one. So, there is a strong relationship between the variables.

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Question 5(Multiple Choice Worth 2 points)
(Appropriate Measures MC)

The scores earned in a flower-growing competition are represented in the stem-and-leaf plot.



0 5
1 0, 3, 7
2 4, 6, 8
3 2
4
5 8
Key: 5|8 means 58


What is the appropriate measure of variability for the data shown, and what is its value?
The range is the best measure of variability, and it equals 18.5.
The IQR is the best measure of variability, and it equals 45.
The range is the best measure of variability, and it equals 45.
The IQR is the best measure of variability, and it equals 18.5.


Question 6(Multiple Choice Worth 2 points)
(Appropriate Measures MC)

The line plot displays the cost of used books in dollars.

A horizontal line starting at 1 with tick marks every one unit up to 9. The line is labeled Cost in Dollars, and the graph is titled Cost of Used Books. There are two dots above 1, 2, 3, 5, and 6. There are four dots above 7.

Which measure of center is most appropriate to represent the data in the graph, and why?

The median is the best measure of center because there are no outliers present.
The median is the best measure of center because there are outliers present.
The mean is the best measure of center because there are no outliers present.
The mean is the best measure of center because there are outliers present.

Answers

Therefore, the correct answer is: The range is the best measure of variability, and it equals 78.

What is range?

Range is a measure of variability that represents the difference between the maximum and minimum values in a dataset. It gives an indication of how spread out the data is. To find the range of a dataset, you simply subtract the minimum value from the maximum value. Range is often used as a quick and simple measure of variability, but it can be sensitive to outliers and extreme values.

Here,

1. For question 5, the appropriate measure of variability for the given data set is the range, which is the difference between the maximum value and the minimum value in the data set.

To find the maximum and minimum values from the given stem-and-leaf plot, we can look at the highest and lowest digits in each row. The highest value is 83 and the lowest value is 5, so the range is:

Range = 83 - 5 = 78

2. For question 6, the appropriate measure of center to represent the data in the given line plot is the median, because the data is skewed to the right and there are outliers present. The median is less sensitive to outliers than the mean.

Therefore, the correct answer is: The median is the best measure of center because there are outliers present.

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HELP ITS DUE TODAY!!!!!!!!!!!!!!!!!!!!

Answers

Step-by-step explanation:

Please give brainliest

1a) 3√49

3 x √49

3x 7 =21

b) 2³√64

2 x √4

2x2 =4

c) (√x+2)²

the square will cancel the square root

= x+2

Answer:

These are correct

Step-by-step explanation:

1. a) 21

1. b) 8

1. c) x+2

2. a) x/10 and subtracting or simplifying it gives you the same answer

2. b) 2(3x-1)/ x+3 the operation is simplifying

2. c) 7x+2/ x(x+1) combine the fractions and find a common denominator

2. d) 6/x simplify

2. e) 2x^2 simplify or divide

3. a) 6x^3 y^4

3. b) 16a^2 b^6

3. c) 4x^2

3. d) 2

The difference between numbers tell you how far apart they are on the number line 8 and -16 our units apart because 8 -6 = 14

Answers

The answer of the given question based on the number line is the difference between 8 and -16 is not 14, it is 24. and 8 and -16 are 24 units apart on the number line.

What is the use of number line?

A number line is a visual representation of the real number system, where numbers are placed in order from left to right, with zero in the center. The number line is an important mathematical tool used in a variety of ways, including:

Understanding and comparing numbers: By plotting numbers on a number line, we can visually see the relative size and position of numbers in relation to each other.

Performing arithmetic operations: The number line can be used to add, subtract, multiply, and divide numbers.

Graphing functions: The number line can be used as the horizontal axis of a graph to plot functions and other mathematical relationships.

Actually, the difference between 8 and -16 is not 14, it is 24.

To find the difference between two numbers on a number line, you need to subtract the smaller number from the larger number. In this case, 8 is larger than -16, so we subtract -16 from 8:

8 - (-16) = 8 + 16 = 24

Therefore, 8 and -16 are 24 units apart on the number line.

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The median is greater than the mean, and the majority of the data points are to the left of the mean. the median is greater than the mean, and the majority of the data points are to the right of the mean. the mean is greater than the median, and the majority of the data points are to the left of the mean. the mean is greater than the median, and the majority of the data points are to the right of the mean.

Answers

The option that describes the probability distribution is option (A) The mean is greater than the median, and the majority of the data points are to the left of the mean.

To find the mean of the probability distribution, we can use the formula:

mean = Σ(xi × pi)

where xi is the value of the random variable and pi is the corresponding probability.

Using this formula, we get:

mean = (1 × 0.75) + (2 × 0.1) + (3 × 0.1) + (4 × 0.05) + (5 × 0)

= 0.75 + 0.2 + 0.15 + 0.2

= 1.3

To find the median, we need to arrange the values in increasing order of x and then find the middle value.

Arranging the values in increasing order of x, we get:

x = 1, 2, 3, 4, 5

p(x) = 0.75, 0.1, 0.1, 0.05, 0

The median is the middle value, which is 3 in this case.

Therefore, the mean is 1.3 and the median is 3.

Since the mean is greater than the median, we can eliminate options C and D.

To determine whether the majority of the data points are to the left or right of the mean, we can examine the shape of the distribution.

Since the probability of x=1 is much higher than the other values, the distribution is skewed to the left. This means that the majority of the data points are to the left of the mean.

Therefore, the correct option is (A) The mean is greater than the median, and the majority of the data points are to the left of the mean.

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The given question is incomplete, the complete question is:

Which of the following describes the probability distribution below?

A.) The mean is greater than the median, and the majority of the data points are to the left of the mean.

B.) The mean is greater than the median, and the majority of the data points are to the right of the mean.

C.) The median is greater than the mean, and the majority of the data points are to the left of the mean.

D.) The median is greater than the mean, and the majority of the data points are to the right of the mean.

HELP ME ASAPPPPP!!!!

Answers

Thus, the explicit formula for the simple interest sequence A(n) = P + (n-1)(i.P) is: A(n) = P * (1 + i * (n-1)).

What is simple interest?

Simple interest is a method of calculating interest on a loan or investment where interest is charged only on the initial principal amount. In simple interest, the interest rate is applied to the original principal amount, and the interest earned remains the same throughout the entire term of the loan or investment.

by the question.

The formula for a simple interest sequence A(n) = P + (n-1) (i.P) represents the value of an investment that earns simple interest over n periods, where:

A(n) is the value of the investment after n periods.

P is the principal or initial investment

i is the interest rate per period as a decimal fraction (e.g. 0.05 for 5%)

n is the number of periods

To derive the explicit formula for A(n), we can use the formula for simple interest:

I = P * i * n

where I am the total interest earned over n periods. We can then express A(n) as:

A(n) = P + I

Substituting the expression for I, we get:

A(n) = P + P * i * (n-1)

Simplifying, we can factor out P to get:

A(n) = P * (1 + i * (n-1))

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how many acres are in a government rectangular survey that consists of the sw 1/4, ne 1/4, and nw 1/4 of section 13, blendon township?

Answers

The government rectangular survey consisting SW 1/4, NE 1/4, and NW 1/4 of Section 13 in Blendon Township covers 480 acres.

We have,

In the Government Rectangular Survey System, a section is a square tract of land measuring 1 mile by 1 mile, covering an area of 640 acres.

Each section is divided into quarters.

If we consider the SW 1/4, NE 1/4, and NW 1/4 of Section 13 in Blendon Township, the total acreage can be calculated as follows:

SW 1/4:

This represents one-fourth of the section.

The SW 1/4 of Section 13 is 640 acres / 4 = 160 acres.

NE 1/4:

The NE 1/4 of Section 13 is also 160 acres.

NW 1/4:

The NW 1/4 of Section 13 is 160 acres.

To find the total acreage, add up the individual acreages:

160 acres (SW 1/4) + 160 acres (NE 1/4) + 160 acres (NW 1/4)

= 480 acres

Therefore,

The government rectangular survey consisting SW 1/4, NE 1/4, and NW 1/4 of Section 13 in Blendon Township covers 480 acres.

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GUYS PLEASE HELP
* I’LL GIVE YOU BRAINLIEST

Write and simplify a polynomial expression to find the area of 4 circles. Each circle has a radius of (4a-6)

Answers

 π(64a2 - 192a + 144) is the polynomial expression to find the area of 4 circles where circle has a radius of (4a-6) .

what is polynomial ?

When variables and coefficients are combined using arithmetic procedures like addition, subtraction, multiplication, and non-negative integer exponents, the result is a mathematical expression known as a polynomial. Any numerical value may be represented by the variables, and the expression's coefficients are constants that combine the variables.

given

A =  πr², where r is the circle's radius, is the method for calculating a circle's surface area. The area of one circle can be expressed as follows if the radius of each circle is (4a–6):

A₁ = π(4a-6)²

If we condense this phrase, we get:

A₁ = π(16a² - 48a + 36)

A₂ = π(4a-6)²

A₂ = π(16a² - 48a + 36)

A₃ = π(4a-6)²

A₃ = π(16a² - 48a + 36)

A₄ = π(4a-6)²

A₄ = π(16a² - 48a + 36)

We can add up the areas of each of the four circles to determine their combined area:

A1 + A2 + A3 + A4 Equals A total

A total is equal to π (16a2 - 48a + 36) +  π(16a2 - 48a + 36) +  π(16a2 - 48a + 36).

 π(64a2 - 192a + 144) = A total

 π(64a2 - 192a + 144) is the polynomial expression to find the area of 4 circles where circle has a radius of (4a-6) .

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help my math math math​

Answers

Pr(total)=pr(blue)+pr(green)+pr(red)=4+1+2

=7

a) pr(blue)= pr(blue)/pr(total)=4/7

b) pr(green)= pr(green)/pr(total)=1/7

c) pr(not green)= pr(blue)+pr(red)= 4/7+2/7=6/7

d)pr(not purple)= ???

e)pr(red)=pr(red)/pr(total)=2/7

Question d seems like it is a problem cause we were not told that a purple ball was in the bag.

PLS HELP I NEED HELP ASAP

Answers

Answer:

3a + 2b

Step-by-step explanation:

The perimeter of the rectangle is calculated by following formula:

2×(w+l)

w: width, l: length

Let x represent the missing side length, width,

2(x + 5a - b) = 16a + 2b

Multiply inside the parenthesis 2

2x + 10a - 2b = 16a + 2b

transfer 10a - 2b to the other side of the equation

2x = 16a + 2b - 10a + 2b

Add/subtract like terms

2x = 6a + 4b

Divide both sides by 2

x = 3a + 2b

IXL
An equilateral triangle with center C is shown below.
(HELP!!)

Answers

The area of the equilateral triangle is 36√3 square units

What is area of the equilateral triangle?

Area of an equilateral triangle is equal to(√3/4)a², where an is the length of the triangle's side.

In an equilateral triangle, the center, the centroid, and the circumcenter coincide.

The distance between the center and a vertex is 6cm, which is also the radius of the circumcircle.

The side length is [tex]6(3)^{1/2}[/tex], which is twice the length of the radius.

So, the radius of the circumcircle is 6 cm, and the length of each side of the equilateral triangle is 12 cm.

The area of an equilateral triangle with side length s is given by:

A = (s² * √3) / 4

Substituting s = 12, we get:

A = (12² * √3) / 4

= 36√3

Therefore, the area of the equilateral triangle is 36√3 square units.

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Find the volume of the triangular prism below​

Answers

We can claim that after answering the above question, the As a result, the triangular prism has a volume of 240 cubic centimetres.

what is prism?

A prism is a polyhedron with an n-sided polygonal basis, a second base that is a shifted copy of the first base, and n extra faces (necessarily all parallelograms), with two connecting the corresponding sides of the base. All cross sections that are parallel to the base are translations of it. A prism is a two-sided, solid, three-dimensional object with two faces. It has the same cross-sections, flat sides, and similar bases. Faces of a prism are parallelograms or rectangles with no bases. A prism is a refracting item that is homogeneous, solid, and transparent, contained by two planes that are obliquely oriented to one another. A typical prism has two triangular faces and three parallel rectangular faces. They are made of either glass or metal.  

To calculate the volume of a triangular prism, multiply the area of the triangular base by the prism's height.

Triangle area = 1/2 * base * height

Triangle area = 1/2 * 8 cm * 6 cm

Triangle area = 24 cm2

We must now determine the prism's height. The diagram shows that the prism has a height of 10 cm.

Finally, the volume of the triangular prism can be calculated by multiplying the area of the triangle base by the prism's height:

Prism volume = base area * The prism's height

Prism volume = 24 cm2 * 10 cm

Prism volume = 240 cm3

As a result, the triangular prism has a volume of 240 cubic centimeters.

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Jessica went deep sea diving. She make the first stop on her descent at 25 meters below the surface of the water. From that point she dives down further, stopping every 5 meters. If she makes 4 additional stops, which number represents her position, relative to the surface of the water?

*
A 45
B 20
C -20
D -45

Answers

Answer:

-45

Step-by-step explanation:

Which statements about this system of equations are true? Check all that apply

2 x minus 7 y = negative 13. Negative 2 x + 11 y = 1.

The x-variable will be eliminated when adding the system of equations.

The y-variable will be eliminated when adding the system of equations.

The sum of the system of equations is 4 y = negative 12.

x = 17

y = negative 3

There are infinitely many solutions to the system of equations.

Answers

As a result, (x, y) = is the answer to a set of equations. (-17, -3). There aren't an endless number of answers because there is a single one.

What sort of equation would that be?

The meaning of an equation in algebra is a mathematical assertion that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two expressions 3x + 5 and 14, which are split by the 'equal' symbol.

The statements that are true about this system of equations are:

The x-variable will be eliminated when adding the system of equations.

There are infinitely many solutions to the system of equations.

To eliminate the x-variable, we can add the two equations as follows:

(2x - 7y) + (-2x + 11y) = -13 + 1

Simplifying the left-hand side and the right-hand side gives:

4y = -12

Dividing both sides by 4 yields:

y = -3

Substituting y = -3 into either of the original equations gives:

2x - 7(-3) = -13

Simplifying this equation yields:

2x + 21 = -13

Subtracting 21 from both sides yields:

2x = -34

Dividing both sides by 2 yields:

x = -17

Therefore, the solution to the system of equations is (x, y) = (-17, -3). Since there is a unique solution, there are not infinitely many solutions.

The statement "The sum of the system of equations is 4y = -12" is false since the sum of the equations does not simplify to that expression.

The statement "x = 17" is false since the correct solution is x = -17.

The statement "The y-variable will be eliminated when adding the system of equations" is false since adding the equations only eliminated the x-variable.

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Part 1
The granular fertilizer 12​-12​-12 is composed of 12​% ​nitrogen, 12​% ​phosphate, and 12​% potassium. ​ Similarly, the fertilizer 16​-17​-0 is composed of 16​% ​nitrogen, 17​% ​phosphate, and 0​% potassium. If a gardener mixes a 10 pound bag of 12​-12​-12 with a 5 pound bag of 16​-17​-0​, what are the concentrations of​ nitrogen, phosphate, and potassium in the​ mixture? Express the answers as percents

Answers

the concentrations of nitrogen, phosphate, and potassium in the mixture are 13.33%, 13.67%, and 8%, respectively. To find the concentrations of nitrogen, phosphate, and potassium in the mixture, we need to calculate the total amount of each nutrient in the two bags and then divide by the total weight of the mixture.

First, let's calculate the amount of each nutrient in the 10 pound bag of 12-12-12:

Nitrogen: 12% of 10 pounds = 1.2 pounds

Phosphate: 12% of 10 pounds = 1.2 pounds

Potassium: 12% of 10 pounds = 1.2 pounds

Next, let's calculate the amount of each nutrient in the 5 pound bag of 16-17-0:

Nitrogen: 16% of 5 pounds = 0.8 pounds

Phosphate: 17% of 5 pounds = 0.85 pounds

Potassium: 0% of 5 pounds = 0 pounds

Now, let's add up the total amount of each nutrient in the two bags:

Nitrogen: 1.2 + 0.8 = 2 pounds

Phosphate: 1.2 + 0.85 = 2.05 pounds

Potassium: 1.2 + 0 = 1.2 pounds

Finally, let's divide the total amount of each nutrient by the total weight of the mixture (10 + 5 = 15 pounds) and express the answers as percentages:

Nitrogen: (2 / 15) x 100% = 13.33%

Phosphate: (2.05 / 15) x 100% = 13.67%

Potassium: (1.2 / 15) x 100% = 8%

Therefore, the concentrations of nitrogen, phosphate, and potassium in the mixture are 13.33%, 13.67%, and 8%, respectively.

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A walkway forms one diagonal of a square playground. The walkway is 22m long. How long is a side of the​ playground?

Answers

Answer:

15.556

Step-by-step explanation:

The length of the diagonal of a square is equal to the length of one side of the square multiplied by the square root of 2

22=x√2

A baker me two batches of cookies the first batch contain 36 cookies in the second batch contain 48 cookies bakery divide the cookies into seven equal groups with non-leftover Right numerical expression using parentheses that show how to determine the total number of cookies the baker we should put into each

Answers

The total number of biscuits the baker should place into each, according to the declaration, is 12.

What does an arithmetic expression mean?

The mathematical expressions consist of at least a couple of integers or issues, no fewer than one math procedure, and a sentence. It's achievable to multiply, divide, add, or remove with this algebraic method. An expression's form is as follows: Expression: (Math Operator, Number/Variable, Arithmetic Operator)

The total number of cookies in both batches is:

36 + 48 = 84

To divide the cookies into seven equal groups, we need to divide the total number of cookies by 7:

84 / 7 = (12 x 7) / 7 = 12

So the baker should put 12 cookies into each of the seven groups.

A numerical expression that shows how to determine the total number of cookies the baker should put into each group with parentheses is:

(36 + 48) / 7 = (84) / 7 = 12

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the concentration of a drug in a patient's bloodstream is monitored over 10-minute intervals for two hours. t (min) 0 10 20 30 40 50 60 70 80 90 100 110 120 c (mg) 0 2 17 37 55 72 89 103 111 113 113 103 68 a.) how fast is the concentration of the drug changing at 50 minutes? 1.7 mg/min b.) how fast is the concentration of the drug changing at 85 minutes? 1 mg/min c.) is the drug's concentration increasing or decreasing at 115 minutes? decreasing

Answers

a) The rate of change of the drug's concentration at 50 minutes is 1.7 mg/min.

b) The rate of change of the drug's concentration at 85 minutes is 0.2 mg/min.

c) The drug's concentration is decreasing at 115 minutes.

a) The central difference approach can be used to calculate the rate of medication change after 50 minutes.

f'(x) = (f(x+h) - f(x-h))/2 × h    ....(1)

As per the question, we have h = 10 and x = 50

Substitute the values of h = 10 and x = 50 in (1),

f'(40) = (f(50+10) - f(50-10))/2 × 10

f'(40) = (89-55)/20

f'(40) = 1.7 mg/min

b) For the rate of change of concentration at 85 minutes:

Here, f(80) = 111 mg and f(90) = 113.

The concentration at 90 minutes is 113 mg.

Rate of change = (f(90) - f(80)) / h

= (113 - 111) /10

= 2 / 10

= 0.2 mg/min

c) Since the concentration at 120 minutes (68 mg) is lower than the concentration at 110 minutes (103 mg), the drug's concentration is decreasing.

Therefore, the drug's concentration is decreasing at 115 minutes.

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The S.S of the two equations : X+2y =5, and 2x+ky=3 in RxR equals phi then k=?

Answers

The value of k such that the solution set of the system is empty is any value of k that is not equal to 4.

What is equation?

A mathematical statement that expresses the equivalence of two numbers or expressions is known as an equation. It has two sides, the left-hand side (LHS) and the right-hand side (RHS), which are equal and are divided by the equal symbol (=). Variables, constants, and mathematical operations like addition, subtraction, multiplication, and division can all be found in an equation.

To find the value of k such that the solution set of the system of equations X + 2y = 5 and 2x + ky = 3 is the empty set (i.e., the intersection of their solution sets is the empty set), we can use the determinant of the coefficient matrix.

The coefficient matrix for the system is:

| 1 2 |

| 2 k |

The determinant of this matrix is:

[tex]det(| 1 2 |[/tex]

| 2 k |) = (1)(k) - (2)(2) = k - 4

For the solution set of the system to be empty, the determinant must be non-zero, since a zero determinant would indicate that the coefficient matrix is singular and therefore the system has no unique solution.

So, we need to solve the equation k - 4 ≠ 0 for k:

k - 4 ≠ 0

k ≠ 4

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Please help with #10 and #13!!

Answers

The angle of rotation in standard form is 251.5651 degrees.

The length of arc S is approximately 20.94 feet.

How do we solve this?

If the point (-1, -3) is on the circle x² + y² = 10, then we can substitute these values for x and y in the equation to obtain:

(-1)² + (-3)² = 10

1 + 9 = 10

So, the point (-1, -3) satisfies the equation of the circle.

To find the angle of rotation in standard form, we need to use the formula:

tan(θ) = y/x

where θ is the angle of rotation.

In this case, x = -1 and y = -3, so we have:

tan(θ) = (-3)/(-1)

tan(θ) = 3

θ = tan⁻¹(3)

Using a calculator, we find:

θ ≈ 1.2490 radians or 71.5651 degrees

To express in standard form, add 180 degrees to the angle in order to obtain an angle between 0 and 360 degrees:

θ ≈ 71.5651 + 180 ≈ 251.5651 degrees

To find the length of an arc S given the radius r and the central angle θ, we use the formula:

S = (θ/360) x 2πr

In this case, r = 15 ft and θ = 1.396 radians

Substituting the values:

S = (1.396/2π) x 2π(15 ft)

S ≈ 1.396 x 15 ft

S ≈ 20.94 ft

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Complete question:

Consider the point (-1, -3), which is on the circle x² + y² = 10. Find the angle of rotation in standard form

Find the length of the arc S when r = 15 ft and θ = 13.96°

you have six bottles of paroxetine 10 mg in stock. the par level is four bottles, and the maximum quantity is ten bottles. how many bottles should be ordered?

Answers

The order quantity should be 4 bottles.

There are 6 bottles of paroxetine 10 mg in stock, and the par level is 4 bottles, while the maximum quantity is 10 bottles. The question is asking how many bottles should be ordered.

This can be found by calculating the difference between the current stock level and the par level and then adding this difference to the current stock level. If the result exceeds the maximum quantity, the order quantity is equal to the difference between the maximum quantity and the current stock level.

Otherwise, the order quantity is equal to the difference between the current stock level and the par level.In this case, the difference between the current stock level and the par level is 6 - 4 = 2 bottles. Adding this difference to the current stock level gives us a total of 6 + 2 = 8 bottles.

Since 8 is less than the maximum quantity of 10, the order quantity is 8 - 4 = 4 bottles. Therefore, 4 bottles should be ordered to maintain the par level of 4 bottles. Therefore, the order quantity should be 4 bottles.

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