Answer: 8,336
Step-by-step explanation:
So 1 meter is equal to 100 centimeters. All you have to do is multiply 83.36 by 100.
83.36 * 100 = 8,336
Hope this helps!!! :)
Determine the effective tax rate for a taxable income of $115,500. Round theginal answer to the nearest hundredth
A) 18.71%
B) 17.20%
C) 24.10%
D) 24.75%
The effective tax rate for a taxable income of $115,500 is A) 18.71%
How to calculate the taxThe introductory $10,275 is subjected to a 10% tax burden, with the converted dollar amount representing $1,027.50 in taxes. The additional taxable sum of $30,900 ($41,175 - $10,275) is accessed at a 12% charge and aggregates to $3,708 worth of duties. An extra levy of 22% is imposed on the total $47,900 that lies between the two stipulated ranges ($89,075 - $41,175). The final evaluation stands at 24%, which provides an identical tax rate for the remaining $25,350 ($115,500 - $89,075). ).
Effective Tax Rate = (Total Tax Paid / Taxable Income) x 100%; which further articulates to ($21,357.50 / $115,500) x 100%,
= 18%
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Find any solution(s) (refer to attachment) of and select the correct statement.
A. The equation has no solution.
B. The equation has two solutions.
C. The equation has one solution.
D. The equation has one solution and one extraneous solution.
The most important of the Shinto gods is the sun goddess who gave light to the world, named ______.
Amaterasu
Susanoo
Tsukyomi
Izanagi
Answer: Amaterasu
Step-by-step explanation: The sun goddess Amaterasu is considered the most important of the Shinto gods because she is believed to be the ancestor of the Japanese imperial family, and therefore the protector of the Japanese people. She is also associated with agriculture, which was a vital part of Japanese society.
Please help me i really need this done
Answer:
Step-by-step explanation:
4-10(9m-7)
4-90m+70
74-90m
56x+24/8
8(7x + 3)/8
7x + 3
24r + 16
8(3r + 2)
is 2m-3 same as 4(1/2m-3)
2m-3 = 2m-12
: no
-2(10-15x) same as 14x-20+16x
-20+30x = -20+30x
: yes
Identify the values of a, b, and c in the following quadratic equation: 2x^2 −3x−5
The table shows the age distribution of members of a gym. A member of gym is chosen at random. What is the probability that the person is: a) 21 or more b) 55 or less c) not in the 21 to 35 age group
The probability that the selected member is 21 or more is 88%.
The probability that the selected member is 55 or less is 86%.
The probability that the selected member is not in the 21 to 35 age group is 58%.
Finding probabilities:The basic probability formula of dividing the number of favorable outcomes by the total number of outcomes.
In this case, we are given the percentage of members in each age group, and we need to find the probability of selecting a member with a certain age range.
Here we have
The table shows the age distribution of members of a gym.
Age - Under 21 21 -35 36 - 55 Over 55
percentage 12 42 32 14
a) To find the probability that the selected member is 21 or more,
Add the percentage of members who are 21-35, 36-55, and over 55 since all of these age groups are 21 or more.
Probability (21 or more)
= Percentage (21-35) + Percentage (36-55) + Percentage (Over 55)
= 42% + 32% + 14%
= 88%
b) To find the probability that the selected member is 55 or less,
Add the percentage of members who are under 21, 21-35, and 36-55 since all of these age groups are 55 or less.
Probability (55 or less)
= Percentage (Under 21) + Percentage (21-35) + Percentage (36-55)
= 12% + 42% + 32%
= 86%
c) To find the probability that the selected member is not in the 21 to 35 age group,
Add the percentage of members who are under 21, 36-55, and over 55 since all of these age groups are not in the 21 to 35 age group.
Probability (not in the 21 to 35 age group)
= Percentage (Under 21) + Percentage (36-55) + Percentage (Over 55)
= 12% + 32% + 14%
= 58%
Therefore,
The probability that the selected member is 21 or more is 88%.
The probability that the selected member is 55 or less is 86%.
The probability that the selected member is not in the 21 to 35 age group is 58%.
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Determine the interval(s) on which the function Is constant.
Write your answer as an interval or list of intervals.
When writing a list of Intervals, make sure to separate each interval with a comma and to use as few intervals as possible.
Click on "None* if applicable.
The list of intervals on which the function is constant is:
A(-4,-3) and B(3,6).
What is a constant function?A constant function is a function that returns the same value regardless of the input. In other words, for every value of x, the output of the function is the same constant value. For example, the function f(x) = 2 is a constant function because no matter what value of x is plugged into the function, the output will always be 2. Constant functions are often represented by horizontal lines on a graph.
What does a list of intervals mean in the graph?A list of intervals in a graph typically indicates the range of values or intervals on a given axis. For example, on the x-axis of a graph, a list of intervals might represent the range of values from a lower bound to an upper bound, with each interval indicating a range of values that falls between two specific points on the axis. On the y-axis, the intervals might represent the range of possible values for the dependent variable or data being plotted. In general, the intervals on a graph provide a visual representation of the range of values being considered or plotted.
According to the given informationThe given function in the graph on intervals A(-4,-3) and B(3.6) is a horizontal line which means there is no change in output. So the function is constant.
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Use the graph to answer the questions
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The diagram of the Gateway Arch on the coordinate plane, analyzed using quadratic equations indicates;
1. The vertex point is (50, 630)
2. The solution point are; (20, 0), and (80, 0)
3. Vertex form; f(x) = -0.7·(x - 50)² + 630
4. Factored form; f(x) = -0.7·(x - 20)·(x - 80)
What is a quadratic equation?A quadratic equation is an equation of the form f(x) = a·x² + b·x + c
1. The vertex obtained from the graphical diagram of the Gateway Arch indicates that the point corresponding to the vertex point is; (50, 9 × 70 = 630)
The vertex point is; (50, 630)
2. The solution are the points the curve of the Gateway intersects the x-axis, which are points where the y-axis values are zero, therefore;
The solutions are; (20, 0), and (80, 0)
3. The vertex form of a quadratic equation is; f(x) = a·(x - h)² + k
Where;
(h, k) = The coordinates of the vertex
Therefore;
(h, k) = (50, 630)
f(20) = 0 = a·(20 - 50)² + 630
a·(20 - 50)² = -630
a = -630/((20 - 50)²) = -630/900 = -7/10
a = -7/10 = -0.7
The vertex form quadratic equation is therefore; f(x) = -0.7·(x - 50)² + 630
4. The factored form of a quadratic equation is; f(x) = a·(x - r₁)·(x - r₂)
r₁ = 20, and r₂ = 80, a obtained from the vertex is; a = -0.7
The factored form is therefore; f(x) = -0.7·(x - 20)·(x - 80)
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solve the equation for y
7y+2y=81
Before we begin we must know:
¿What is an equation?An equation is an algebraic equality in which letters (unknowns) with unknown value appear. The degree of an equation is given by the largest exponent of the unknown. To solve an equation is to determine the value or values of the unknowns that transform the equation into an identity.
Solving the equation, we will first add what is in the first, I mean:
[tex]\implies \sf 7y + 2y[/tex]Now we must convert to a fraction, first we will put the greater number on top and the smaller number below.
[tex] \boxed{ \sf y \implies \frac{81}{9} }[/tex]Now the last thing we should do is divide both numbers by nine (9), and we will have the following:
[tex] \boxed{ \sf y = \frac{81}{9} \implies 9}[/tex]∴ The result of our equation is y = 9
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4p + 1 < −11 or 6p + 3 > 39
The solution to the compound inequality 4p + 1 < −11 or 6p + 3 > 39 is p > 6 or p > -3.
What is compound inequality?A compound inequality is a mathematical statement that involves two or more inequalities joined by either the word "and" or "or". The solution set of a compound inequality is the set of all values that satisfy both (in the case of "and") or either (in the case of "or") of the individual inequalities.
According to question:Let's solve each inequality separately:
4p + 1 < −11
Subtracting 1 from both sides, we get:
4p < -12
Dividing both sides by 4 (and remembering to flip the inequality because we are dividing by a negative number), we get:
p > -3
So the solution to the first inequality is:
p > -3
Now let's look at the second inequality:
6p + 3 > 39
Subtracting 3 from both sides, we get:
6p > 36
Dividing both sides by 6, we get:
p > 6
So the solution to the second inequality is:
p > 6
Therefore, the solution to the compound inequality 4p + 1 < −11 or 6p + 3 > 39 is:
p > 6 or p > -3
This can be written more simply as:
p > -3
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In 2012, the population of a city was 5.51 million. The exponential growth rate was 3.82% per year.
a) Find the exponential growth function.
b) Estimate the population of the city in 2018.
c) When will the population of the city be 10 million?
d) Find the doubling time.
helppppppp
Answer:
a) To find the exponential growth function, we can use the formula:
P(t) = P0 * e^(rt)
Where:
P(t) = the population at time t
P0 = the initial population (in this case, 5.51 million)
e = the mathematical constant e (approximately 2.71828)
r = the annual growth rate (in decimal form)
t = the number of years
Substituting the given values, we have:
P(t) = 5.51 * e^(0.0382t)
b) To estimate the population of the city in 2018, we can substitute t = 6 (since 2018 is 6 years after 2012) into the exponential growth function:
P(6) = 5.51 * e^(0.0382*6) ≈ 6.93 million
Therefore, the estimated population of the city in 2018 is approximately 6.93 million.
c) To find when the population of the city will be 10 million, we can set P(t) = 10 and solve for t:
10 = 5.51 * e^(0.0382t)
e^(0.0382t) = 10/5.51
0.0382t = ln(10/5.51)
t ≈ 11.7 years
Therefore, the population of the city will be 10 million in approximately 11.7 years from 2012, or around the year 2023.
d) To find the doubling time, we can use the formula:
T = ln(2) / r
Where:
T = the doubling time
ln = the natural logarithm
2 = the factor by which the population grows (i.e., doubling)
r = the annual growth rate (in decimal form)
Substituting the given value of r, we have:
T = ln(2) / 0.0382 ≈ 18.1 years
Therefore, the doubling time for the population of the city is approximately 18.1 years.
Naya has a pitcher that contains 3 cups of salted lassi, a yogurt drink with sait and sites. She pours 6 fluid ounces of lassi into each glass. If she uses all of the lassi, how many glasses does Naya use?
A. 2
B. 4
C. 16
D. 18
After 6 fluid ounces , Naya uses 4 glasses as a result.
Define ounces?A unit of weight is an ounce. There are various kinds of ounces, including avoirdupois, troy, and fluid ounces. One sixteenth of a pound is equivalent to one avoirdupois ounce . A troy ounce, often known as an apothecaries' measure, is equivalent to 480 grains or one-twelfth of a pound. A volume unit is a fluid ounce. 1/8 of a cup, 2 tablespoons, or 6 teaspoons make to one fluid ounce
In Naya's pitcher, there are three glasses of salted lassi.
She fills each glass with six fluid ounces of lassi.
By translating cups to fluid ounces and dividing the entire amount of lassi by the amount put into each glass, we can determine how many glasses Naya uses if she consumes all of the lassi.
8 fluid ounces make constitute a cup.
Consequently, 3 cups equal 24 fluid ounces (3 x 8).
24 divided by 6 results in:
4 glasses are equal to 24/6.
Naya uses four glasses as a result.
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Problem 6: Find the surface area and round to the nearest tenth.
Therefore, the surface area of the prism is approximately 557.2 square feet when rounded to the nearest tenth.
What is surface area of prism?The surface area of a prism is the total area of all its faces, including the bases. The formula for finding the surface area of a prism depends on the shape of its base. For a right prism, the surface area can be found by adding the area of the two bases to the lateral area, which is the sum of the areas of all the rectangular faces of the prism.
Here,
To find the surface area of the prism, we need to find the area of each of the six rectangular faces that make up the prism, and then add them together. The two triangular faces are congruent, so we can find the area of one and double it to get the total area of the two.
The area of a triangle is given by:
Area = (1/2) x base x height
For the given triangles, the base is 9 ft and the height is 8 ft (for one triangle) and 10 ft (for the other triangle), so the areas are:
Area1 = (1/2) x 9 ft x 8 ft
= 36 ft²
Area2 = (1/2) x 9 ft x 10 ft
= 45 ft²
The total area of the two triangles is:
TotalArea = 2 x (Area1 + Area2)
= 2 x (36 ft² + 45 ft²)
= 162 ft²
Now, we need to find the area of the four rectangular faces. Each face is a rectangle with a length of 13 ft and a height of 7.6 ft, so the area of each face is:
AreaRect = length x height
= 13 ft x 7.6 ft
= 98.8 ft²
The total area of the four rectangular faces is:
TotalRectArea = 4 x AreaRect
= 4 x 98.8 ft²
= 395.2 ft²
To find the total surface area of the prism, we add the area of the two triangles to the area of the four rectangular faces:
TotalSA = TotalRectArea + TotalArea
= 395.2 ft² + 162 ft²
= 557.2 ft²
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Given this equation what is the value of y at the indicated point?
Using curves, we can find that the value of y at the indicated point on the curve is √3.
What is the definition of curves?
A smooth-drawn figure or line with a bend or turns is referred to as a curve. A circle is an illustration of a curved shape. Geometry is a subfield of mathematics that examines the dimensions, characteristics, and shapes of figures.
Here in the question,
Given equation:
x = y² - 2
As a point (1, y) is on the curve, we can put the value of x coordinate in the equation:
1 = y² - 2.
Adding 2 on both sides:
1 + 2 = y² - 2 + 2
⇒ 3 = y²
⇒ y = √3.
Therefore, the value of y at the indicated point on the curve is √3.
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Use the box plot showing the ages of those who watch the television show 'The Code" to answer the question that follows.
Which value is the best approximation for the range in ages for the middle 50% of viewers?
A) 10
B) 15
C) 20
D) 45
The range in ages for the middle 50% of viewers is the interquartile range (IQR), which is the height of the box in the box plot. The best approximation is C) 20.
What is interqurtile range?The interquartile range (IQR) is a measure of statistical dispersion that represents the difference between the 75th percentile (Q3) and the 25th percentile (Q1) of a dataset. It is a useful measure of spread because it is not influenced by outliers.
What is Range?Range is a statistical measure that represents the difference between the highest and lowest values in a set of data. It provides a simple indication of the spread or variability of the data.
According to the given information:
A box plot is a graphical representation of the distribution of a dataset. The box in the plot represents the middle 50% of the data, with the lower end of the box representing the 25th percentile (Q1) and the upper end of the box representing the 75th percentile (Q3). The distance between Q1 and Q3, which is represented by the height of the box, is called the interquartile range (IQR).
To answer the question, we need to find the best approximation for the range in ages for the middle 50% of viewers. From the box plot, we can see that the height of the box is approximately 20 units, which is the IQR. Therefore, the best approximation for the range in ages for the middle 50% of viewers is option C) 20. This means that 50% of viewers are between Q1-10 to Q3+10, where Q1 is the 25th percentile and Q3 is the 75th percentile.
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What is 47/ 30 in mixed numbers I'm giving 10 points must hurry
Answer:
1 17/30.
Step-by-step explanation:
you can find this out by seeing how many 30s go into 47 which is 1.
Then subtract to find how much is leftover still over 30.
47 - 30 = 17
So 1 and 17/30
A solid glass cylinder is 31 centimeters high and has a diameter of 3 centimeters. What is the mass of the cylinder if the density of glass is 1.6 grams per cubic centimeter?
Answer:
the mass of the solid glass cylinder is approximately 350.67 grams.
Step-by-step explanation:
The diameter of the cylinder is 3 centimeters, which means that its radius is 1.5 centimeters (half the diameter). The area of the base of the cylinder is the area of a circle, calculated as pi (π) multiplied by the radius squared:
Base area = π x radius^2
Base area = π x (1.5 cm)^2
Base area = 7.07 cm^2 (approximately)
The volume of the cylinder is calculated by multiplying the area of the base by the height:
Cylinder Volume = Base Area x Height
Cylinder volume = 7.07 cm^2 x 31 cm
Cylinder volume = 219.17 cm^3 (approximately)
Now that we know the volume of the cylinder, we can calculate its mass using the density of the glass:
Mass = Density x Volume
Mass = 1.6 g/cm^3 x 219.17 cm^3
Mass = 350.67 grams (approximately)
Evaluate (2-5i)(p+q)(i) when p=2 and q=5i
Answer:
29i
Step-by-step explanation:
While multiplying complex numbers we should remember that i^2=−1.
As p=2 and q=5i,
(2−5i)(p+q)i
= (2−5i)(2+5i)i
= (2×2+2×5i−5i×2−5i×5i)×i
= (4+10i−10i−25×i2)×i
= (4+10i−10i−25×(−1))×i
= (4+25)×i
=29i
A pianist plans to play 3 pieces at a recital from her repertoire of 25 pieces, and is carefully considering which song to play first, second, etc. to create a good flow. How many different recital programs are possible?
There are 13,800 different recital programs possible.
What is permutation?
In mathematics, a permutation is an arrangement of objects in a specific order. In other words, a permutation is a way of selecting a certain number of objects from a larger set and arranging them in a particular order.
The pianist has 25 choices for the first piece, then 24 choices for the second piece (since one piece has already been played), and 23 choices for the third piece (since two pieces have already been played). Therefore, the number of different recital programs possible is:
25 x 24 x 23 = 13,800
There are 13,800 different recital programs possible.
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LOOK AT THE PHOTO PLS
The next entry on the long division would be 0.054, and 0.0054
How to perform long divisionLong division is a method of dividing two numbers using a step-by-step process. Here's how to perform long division:
Step 1: Write the dividend (the number being divided) and the divisor (the number you're dividing by) in the long division format, with the dividend inside the division symbol and the divisor outside.
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how did slugger mcfist get a black eye
A partial table of nutrients and Daily Values (DVS)
based on a 2000-calorie diet is provided. The Sodium row and the Vitamin D row are completed, and each % of the DV is calculated.
Compare each amount with the amount on the given nutrition label. Now use the amount of
saturated fat on the nutrition label to calculate its
% of DV, X. Use the saturated fat amount on the nutrition label
to calculate the %DV for saturated fat.
Note that the %DV for saturated fat in this 2 tbsp serving size is approximately 18%.
What is the explanation for the above response?To calculate the %DV for saturated fat, we need to first calculate how many grams of saturated fat are in the 2 tablespoon (tbsp) serving size.
From the label, we see that the serving size contains 3.5g of saturated fat.
To calculate the %DV for saturated fat, we use the equation:
%DV = (amount of nutrient per serving / DV) x 100%
Plugging in the values for saturated fat, we get:
%DV = (3.5g / 19g) x 100%
%DV = 0.1842 x 100%
%DV ≈ 18%
Therefore, the %DV for saturated fat in this 2 tbsp serving size is approximately 18%.
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please help me fill these boxes
The measurements for area of Jacobs yard are;
Part A = 6m x 3m = 18m
Part B = 4.5m x 3m = 13 m
Part C = 1/2 x 3m x 3m = 4.5 m²
Total area = 18m² + 13.5m² + 4.5m² = 36m²
How do you identify sections that would help in calculating area?To identify sections that would help in calculating area, you need to look for shapes or figures that can be divided into simpler geometric shapes, such as squares, rectangles, triangles, and circles.
Once you have identified the simpler shapes, you can use their formulas to calculate their areas and then add them together to find the total area of the larger shape or figure.
For example, a rectangle can be divided into two triangles or two smaller rectangles, and a circle can be divided into a sector or a ring. Breaking down a larger shape into smaller, simpler shapes can make it easier to calculate their areas accurately.
Jacob is putting tiles on the section of his yard labeled A, B, C. What is the area of the parts that need tiles?
Part A = .............. x ........... = ...........m
Part B = + .............. x ............. = ............ m
Part C = 1/2 x ................. x ............ = ............... m²
Total area = ................... + ..................... + .................. = ..............m
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HELP RAAHHHH
1. During halftime of a football game, a sing shot launches T-shirts at the crowd
A T-shirt is launched from a height of 4 feet with an intal upward velocity of 72 feet per second
The T-shirt is caught 42 feet above the field
How long will take the T-shirt to reach its maximum height? What is the maximum height? What is the range of the function that models the height of the T-shirt over time?
2. During halftime of a football game, a sing shot launches T-shirts at the crowd
A T-shirt is launched from a height of 3 feet with an intal upward velocity of 80 feet per second
The T-shirt is caught 36 feet above the field
How long will take the T-shirt to reach its maximum height? What is the maximum height? What is the range of the function that models the height of the T-shirt over time?
Answer:
1. Using the kinematic equation h(t) = -16t^2 + v0t + h0, where h0 is the initial height, v0 is the initial velocity, and t is time, we have:
h(t) = -16t^2 + 72t + 4
To find the maximum height, we need to find the vertex of the parabolic function h(t). The t-coordinate of the vertex is given by t = -b/2a, where a = -16 and b = 72:
t = -b/2a = -72/(2(-16)) = 2.25 seconds
To find the maximum height, we substitute t = 2.25 seconds into the equation for h(t):
h(2.25) = -16(2.25)^2 + 72(2.25) + 4 = 82 feet
The range of the function h(t) is [4, 82], since the T-shirt starts at a height of 4 feet and reaches a maximum height of 82 feet before falling back to the ground.
2. Using the same kinematic equation as before, we have:
h(t) = -16t^2 + 80t + 3
To find the maximum height, we again need to find the vertex of the parabolic function h(t). The t-coordinate of the vertex is given by t = -b/2a, where a = -16 and b = 80:
t = -b/2a = -80/(2(-16)) = 2.5 seconds
To find the maximum height, we substitute t = 2.5 seconds into the equation for h(t):
h(2.5) = -16(2.5)^2 + 80(2.5) + 3 = 80 feet
The range of the function h(t) is [3, 80], since the T-shirt starts at a height of 3 feet and reaches a maximum height of 80 feet before falling back to the ground.
Step-by-step explanation:
how to solve 3(x+6) = x + 8 + x
the solution to the equation is x = -10.use the distributive property of multiplication over addition to simplify the left-hand side of the equation
what is distributive property ?
The distributive property is a mathematical property that is used to simplify expressions that involve multiplication and addition or subtraction. It states that when you multiply a number (or variable) by a sum or difference,
In the given question,
To solve the equation 3(x+6) = x + 8 + x, you can use the distributive property of multiplication over addition to simplify the left-hand side of the equation, and then combine like terms on both sides of the equation.
Here are the steps:
Distribute the 3 on the left-hand side of the equation:
3(x+6) = 3x + 18
Combine the two x terms on the right-hand side of the equation:
3x + 18 = 2x + 8
Subtract 2x from both sides of the equation:
3x - 2x + 18 = 2x - 2x + 8
Simplifying this expression gives:
x + 18 = 8
Finally, subtract 18 from both sides of the equation:
x + 18 - 18 = 8 - 18
Simplifying this expression gives:
x = -10
Therefore, the solution to the equation 3(x+6) = x + 8 + x is x = -10.
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You draw a card at random from a deck that contains
3
33 black cards and
7
77 red cards.
What is
P(draw a black card
)
P(draw a black card)start text, P, left parenthesis, d, r, a, w, space, a, space, b, l, a, c, k, space, c, a, r, d, end text, right parenthesis?
If necessary, round your answer to
2
22 decimal places.
The probability of drawing a black card is P(draw a black card) = 0.3 or 30%.
Describe Probability?Probability is a branch of mathematics that deals with the study of random events and the likelihood or chance of their occurrence. It is the measure of how likely or unlikely it is for an event to happen. The probability of an event is a number between 0 and 1, where 0 means that the event is impossible, and 1 means that the event is certain to occur.
Probability can be calculated by dividing the number of favorable outcomes by the total number of possible outcomes. For example, if we want to calculate the probability of flipping a coin and getting heads, we divide the number of ways to get heads (1) by the total number of possible outcomes (2), which gives us a probability of 1/2 or 0.5.
Probability is used in many real-world applications, such as in the fields of finance, insurance, and engineering, to make informed decisions based on the likelihood of an event occurring. It is also used in statistical analysis to make inferences about a population based on a sample of data.
The total number of cards in the deck is:
Total number of cards = number of black cards + number of red cards = 33 + 77 = 110
The probability of drawing a black card is given by:
P(draw a black card) = (number of black cards) / (total number of cards) = 33 / 110
Therefore, the probability of drawing a black card is:
P(draw a black card) = 0.3 or 30%
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14. The local credit union is offering a special student checking account. The monthly cost of the account is $15. The first 10 checks are free, and each additional check costs $0.75. You search
the Internet and find a bank that offers a student checking account with no monthly charge. The first 10 checks are free, but each additional check costs $2.50.
a. Assume that you will be writing more than 10 checks a month. Let n represent the number of checks written in a month. Write a function rule for the cost c of each account in terms of n.
b. Write an inequality to determine what number of checks in the bank account would be more expensive than the credit union account.
c. Solve the inequality in part b.
Answer: a. c(n) = 15 + 0.75(n - 10)
b. 15 + 0.75(n - 10) = 2.50(n - 10)=
Simplifying and solving for n, we get:
n = 50
c. n > 50
Step-by-step explanation:
a. The cost c of the credit union account in terms of the number of checks written n can be expressed as:
c(n) = 15 + 0.75(n - 10)
The first term, 15, represents the monthly cost of the account, and the second term represents the additional cost per check beyond the first 10 free checks.
The cost c of the bank account in terms of the number of checks written n can be expressed as:
c(n) = 2.50(n - 10)
The first term, 0, represents the monthly cost of the account, and the second term represents the additional cost per check beyond the first 10 free checks.
b. We want to find the number of checks for which the bank account is more expensive than the credit union account. Let x be the number of checks that makes the cost of the two accounts equal. Then we have:
15 + 0.75(n - 10) = 2.50(n - 10)
Simplifying and solving for n, we get:
n = 50
So if the number of checks written in a month is greater than 50, the bank account will be more expensive than the credit union account.
c. The solution to the inequality is:
n > 50
This means that the number of checks written in a month must be greater than 50 for the bank account to be more expensive than the credit union account.
From a group of 10 people, you randomly select 3 of them.
What is the probability that they are the 3 oldest people in the group?
Give your answer as a fraction
The probability of selecting the 3 oldest people in a group of 10 people is approximately 0.0083 or 0.83%.
What is fraction?
A fraction is a method of representing a part of a whole or a ratio of two numbers. It is a number that is written in the form of one integer (the numerator) over another integer (the denominator), separated by a line or slash.
The probability of selecting the 3 oldest people in a group of 10 people depends on the assumption that all 10 people are distinct individuals and that the selection process is truly random.
The total number of ways to select 3 people from a group of 10 people is given by the combination formula:
C(10, 3) = 10! / (3! * 7!) = 120
This means that there are 120 possible ways to select a group of 3 people from a group of 10 people.
Since we are interested in selecting the 3 oldest people, we assume that the 3 oldest people are identified and we only need to select them from the group of 10 people. There is only 1 way to select the 3 oldest people out of the group of 10 people.
Therefore, the probability of selecting the 3 oldest people in a group of 10 people is:
P = Number of ways to select the 3 oldest people / Total number of ways to select 3 people from a group of 10 people
P = 1 / 120
P = 0.0083
So, the probability of selecting the 3 oldest people in a group of 10 people is approximately 0.0083 or 0.83%.
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Charlie invests $325 in an account that pays 8% simple interest for 15 years.
Use the simple interest formula, I = P ∙ r ∙ t, to answer the following questions.
How much interest will Charlie’s initial investment earn over the 15-year period?
How much money does Charlie have after the 15 years?
Answer: To answer these questions using the simple interest formula, we need to know the values of P (the principal or initial investment), r (the interest rate), and t (the time period in years).
In this case, P = $325, r = 0.08 (8% expressed as a decimal), and t = 15.
Using the simple interest formula, I = P ∙ r ∙ t, we can calculate:
I = $325 ∙ 0.08 ∙ 15 = $390
Therefore, Charlie's initial investment will earn $390 in interest over the 15-year period.
To calculate how much money Charlie will have after the 15 years, we need to add the interest earned to the initial investment.
The total amount of money that Charlie will have after the 15 years is:
Total amount = Initial investment + Interest earned
Total amount = $325 + $390
Total amount = $715
Therefore, Charlie will have $715 after 15 years.
Step-by-step explanation:
a. (10 points) The number of brownies sold by a bakery on a random day is a random variable with a mean value of 38 and a standard deviation of 6. What is the probability that the total number of brownies sold for a random sample of 56 days is less than 2070? Explain. b. (10 Points) Let X₁, X2, X3, and X4 represent the weight of shipment packages at a certain shipment facility. Suppose they are independent normal random variables with means µ4 7.4 pounds and μ₁ = 3.6, μ₂ = 0.9, µ3 = 1.8, μ4 µ2 variances o² = 0 = 0 = 0 = 1. Find P (2X₁ + 1X₂ + 3X3 + 1X4 ≤ 17.6). -
a. The probability that the total number of brownies sold for a random sample of 56 days is less than 2070 is approximately 0.0107.
b. The probability that 2X₁ + X₂ + 3X₃ + X₄ is less than or equal to 17.6
Explain probability
Probability is the measure of the likelihood or chance of an event occurring. It is expressed as a number between 0 and 1, where 0 means the event will not occur, and 1 means the event will definitely occur. Probability is a fundamental concept in mathematics and is used in many fields, including statistics, science, and finance.
According to the given information
a. The total number of brownies sold for a random sample of 56 days, Y, is a normal random variable with mean µ_Y = 56µ_X = 5638 = 2128 and standard deviation σ_Y = √(56)*σ_X = √(56)*6 = 25.21.
We want to find P(Y < 2070). Standardizing Y, we get:
Z = (Y - µ_Y) / σ_Y = (2070 - 2128) / 25.21 = -2.31
Using a standard normal distribution table or calculator, we can find that P(Z < -2.31) is approximately 0.0107. Therefore, the probability that the total number of brownies sold for a random sample of 56 days is less than 2070 is approximately 0.0107.
b. 2X₁ + X₂ + 3X₃ + X₄ is also a normal random variable with mean 2µ₁ + µ₂ + 3µ₃ + µ₄ = 2(3.6) + 0.9 + 3(1.8) + 7.4 = 18.5 and variance 4o² + o² + 9o² + o² = 14o².
We want to find P(2X₁ + X₂ + 3X₃ + X₄ ≤ 17.6). Standardizing the variable, we get:
Z = (17.6 - 18.5) / √(14o²) = -0.5735 / √(o²)
To find P(Z ≤ -0.5735 / √(o²)), we need to know the value of o². If o² = 1, then P(Z ≤ -0.5735) = 0.2831. If o² is a different value, we would need to adjust accordingly.
Therefore, the probability that 2X₁ + X₂ + 3X₃ + X₄ is less than or equal to 17.6
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