please help me on this please

Using the trend line equation, we can find that the record was set in the year 2005.

Data is shown visually in a scatter plot.

The coordinate axes are used in a straightforward scatter plot to plot the points according to their values.

Now in the given question,

The scatter plot equation is:

y = - 0.14x + 12.5

Now we know that y = 11.8 seconds.

So,

11.8 = -0.14x + 12.5

⇒ 0.14x = 12.5 - 11.8

⇒ x = 0.7/0.14

⇒ x = 5

Therefore, the year when the record was set is 2000+5 = 2005.

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Answer:

2/9

Step-by-step explanation:

Answer:2/9

Step-by-step explanation:

(a) the events A and B are disjoint.

(b) the probability that A or B occurs is 0.6.

What is Probability?

In mathematical terms, probability is defined as the ratio of the number of favorable outcomes to the total number of possible outcomes in a given event or experiment. The probability of an event is represented by a number between 0 and 1, where 0 indicates that the event is impossible, and 1 indicates that the event is certain.

(a) If the knowledge that an event A has occurred implies that a second event B cannot occur, then the events A and B are said to be disjoint. This means that A and B have no outcomes in common and cannot happen simultaneously.

(b) If event A and event B are disjoint and event A has probability 0.5 and event B has probability 0.1, then the probability that A or B occurs is the sum of their probabilities:

P(A or B) = P(A) + P(B) = 0.5 + 0.1 = 0.6

Note that since A and B are disjoint, the probability of both events happening simultaneously is 0. Therefore, P(A and B) = 0.

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Answer:

12 units

Step-by-step explanation:

Answer:

7/25

Step-by-step explanation:

Sin = [tex]\frac{opposite}{Hypotenuse}[/tex]

Hypotenuse = 50

Adjacent = 48

Pythagorean Theorem: a² + b² = c²

48² + b² = 50²

2304 + b² = 2500

b² = 196

b = 14

Opposite = 14

Sin A = 14/50 = 7/25

"Yes, there is." The coordinates of point P are either (11/4, 63) or (73/52, 36), depending on the chosen value of x.

We can use the distance formula to find the distance between R and P, and between P and S:

Distance formula:

d = √((x2 - x1)² + (y2 - y1)²)

where (x1, y1) and (x2, y2) are the coordinates of the two points.

Plugging in the values, we get:

RP = √((x - (-3))² + (y - 1)²)

SP = √((x - 4)² + (y - 3)²)

Now, we can set up an equation based on the given ratio of RP to SP:

RP/SP = 5/4

We can substitute the expressions we just derived for RP and SP into this equation:

√((x - (-3))² + (y - 1)²) / √((x - 4)² + (y - 3)²) = 5/4

Squaring both sides of the equation to eliminate the square roots, we get:

((x - (-3))² + (y - 1)²) / ((x - 4)² + (y - 3)²) = 25/16

Expanding the squares and simplifying, we get:

41x² - 146x - 191y² + 1210y + 2900 = 0

For simplicity, let's solve for y:

y = (73x + 2900)/191

Now we can substitute this expression for y into one of the original equations:

RP = √((x - (-3))² + ((73x + 2900)/191 - 1)²)

Simplifying this expression, we get:

RP = √(1049x² - 12212x + 36010)/191

We want RP to be 5x units long, so we can set up the equation:

√(1049x² - 12212x + 36010)/191 = 5x

Squaring both sides, we get:

Expanding the square and simplifying, we get:

1044x² - 12212x + 36010 = 0

Now we can solve for x using the quadratic formula:

x = (-b ± √(b² - 4ac)) / 2a

where a = 1044, b = -12212, and c = 36010. Plugging in these values, we get:

x = (-(-12212) ± √((-12212)² - 4(1044)(36010))) / 2(1044) x = (12212 ± √(5924688)) / 2088 x = (12212 ± 3864) / 2088

This gives us two possible values for x:

x = 11/4 or x = 73/52

Now we can substitute each value of x back into the expression we derived for y:

y = (73x + 2900)/191

For x = 11/4, we get:

y = (73(11/4) + 2900)/191 = 63

So one possible set of coordinates for P is (11/4, 63).

For x = 73/52, we get:

y = (73(73/52) + 2900)/191 = 36

So another possible set of coordinates for P is (73/52, 36).

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Therefore, the most specific category this shape can be sorted into is "Triangle."

3 sides, 3 angles, and 3 vertices make up a closed triangle. It has only two dimensions. Triangles are a part of polygons as well.

The most specific category this shape can be sorted into is "Triangle."

In the given Venn diagram, the category "Triangle" represents the overall group of all types of triangles, which includes "Equilateral," "Isosceles," and "Scalene" triangles.

The triangle with a single tick mark on each side may represent any type of triangle that is not necessarily equilateral, isosceles, or scalene, but it is still a triangle.

Therefore, the most specific category this shape can be sorted into is "Triangle."

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The population will take around 6.9 years to triple and 9.2 years to quadruple.

Let P(t) be the population at time t. According to the problem, the rate of increase of the population is proportional to the population itself, which means: dP/dt = kP

where k is the proportionality constant. This is a separable differential equation that can be solved by separating the variables and integrating both sides:

∫ dP/P = ∫ k dt

ln|P| = kt + C

where C is the constant of integration. Applying the initial condition that the population doubles in 4 years, we get:

ln|2p0| = k(4) + C

ln|p0| + ln|2| = 4k + C

ln|p0| + ln|2| - 4k = C

Substituting C into the previous equation and using it for the new population level, we get:

ln|3p0| = kt + ln|p0| + ln|2| - 4k

ln|3p0|/|p0| = kt - 4k + ln|2|

ln|3/2| = (k/ln2)t - 4k/ln2

ln|3/2|/(k/ln2) = t - 4/ln2

t = ln|3/2|/(k/ln2) + 4/ln2

Therefore, it will take approximately 6.9 years for the population to triple and 9.2 years to quadruple.

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We may state with confidence that the exponential function y = [tex]3(3^{x} )[/tex]models the provided data because both of these values agree with the data.

How is exponential function determined?

Since the output values (y) increase by a factor of three every time the input value (x) increases by one, the data demonstrate exponential growth. As a result, we can use an exponential function of the form y = a(b)x to represent this data.

We can utilise the first two data points to determine the values of a and b.

With y = 3 and x = 0, we get:

3 = [tex]a(b^{0} )[/tex]

3 = a

With x=1 and y=9, we get:

9 = [tex]a(b^{x} )[/tex]

b = 3

Hence, y = [tex]3(3^{x} )[/tex] is the exponential function that represents the data.

We may substitute the other input values and compare them to the appropriate output values to validate this model:

If x = 2, then y = [tex]3(3^{2} )[/tex] = 27.

If x = 3, then y = [tex]3(3^{3} )[/tex] = 81.

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The solution to the quadratic equation 2x²−3x−5=0 are x=5/2 or x=-1/2

The quadratic formula can be used to solve the quadratic equation 2x²−3x−5=0. Here’s how to do it:

First, identify the coefficients of the equation. In this case, a=2, b=-3, and c=-5.

Next, plug these values into the quadratic formula: x = (-b ± √(b²-4ac)) / 2a,Substitute the values in the equation: x = (-(-3) ± √((-3)²-4(2)(-5))) / 2(2)

Simplify the equation to get:x = (3 ± √(9+40)) / 4,

x = (3 ± √49) / 4
x = (3 + 7) / 4 or x = (3 - 7) / 4
x = 5/2 or x = -1/2

In summary, the quadratic formula can be used to solve quadratic equations with ease. It is important to know the values of the coefficients of the equation and substitute them into the quadratic formula. The formula will simplify the equation and give the solutions.

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From the given concentrations of the solution, She needs to add 32.83 pounds of water to get 32.83 pounds of syrup.

Concentration is equal to [ (mass of sugar)/(mass of solution) ] × 100

1) 20% concentration

sugar mass equals 0.5 pounds

concentration = 0.5 lbs × 100 / mass of solution = mass of sugar * 100

The solution weighs 2.5 pounds.

Sugar and solution combined equal 2.5 pounds, hence 2.5 pounds minus 0.5 pounds equals 2.0 pounds of water.

She needs to add 2.0 pounds of water to get 2.5 pounds of syrup.

2) 25% concentration

adhere to the same process.

Solution mass = 0.5 lbs × 100 / 25 =

Solution weight is 2.0 lbs.

water weighs 2.0 lbs minus 0.5 lbs, or 1.5 lbs.

She needs to add 1.5 pounds of water to get 2.0 pounds of syrup.

3) Repeat the process

Concentration = 0.5 lbs × 100 / 1.5, where mass of solution = mass of sugar × 100

solution weight is 33.33 pounds.

water's mass is 32.83 pounds after subtracting 0.5 pounds.

She needs to add 32.83 pounds of water to get 32.83 pounds of syrup.

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Complete question -

Ella has 0.5 lbs of sugar. How much water should she add to make the following concentrations? Tell Ella how much syrup she will have in each case. 20%, 25% and 1.5% syrup?

There is gain of $1,000 on the sale. The solution has been obtained by using the arithmetic operations.

What are arithmetic operations?

All real numbers are believed to be able to be described by the four fundamental operations, often known as "arithmetic operations". Quotient, product, sum, and difference are the next four mathematical operations after division, multiplication, addition, and subtraction.

We are given that an equipment costing $135,000 has a book value of $124,000 and it is sold for $125,000.

Since, the sale value is higher than the book value, therefore there is a gain.

Using arithmetic operations, we get

Gain on sale = $125,000 - $124,000

Gain on sale = $1,000

Hence, there is gain of $1,000 on the sale.

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The second part of the question i.e. how is it recorded for this transaction is related to the subject accountancy and not mathematics.

No, because the SAS Congruence Theorem requires two pairs of congruent sides and one congruent angle.

No, because the SAS Congruence Theorem requires two pairs of congruent sides and one congruent angle. To use the SAS Congruence Theorem to prove that GHF =KHJ, it would be necessary to have information about the lengths of the corresponding sides and the measure of the included angle in each triangle. Without this information, it is not possible to prove that GHF =KHJ using the SAS Congruence Theorem. To prove that GHF =KHJ using this theorem, it would be necessary to show that the two sides GK and KH are congruent, the two sides HF and HJ are congruent, and the included angle GHF is congruent to the included angle KHJ.

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The length of ⌢ WX ⌢ expressed as a fraction times π is:6÷π

What is Circle ?

In geometry, a circle is a two-dimensional shape consisting of all the points that are equidistant from a given point, called the center. The distance from the center to any point on the circle is called the radius of the circle.

From the given information, we know that V, W, and X are points on a circle with center V, and that VW = WX = 3. We also know that ∠WVX = 90°.

Since WX is a diameter of the circle, it has length equal to twice the radius of the circle. Let r be the radius of the circle, then we have:

VW + WX = 2r

3 + 3 = 2r

r = 3

So the radius of the circle is 3. Since WX is a diameter, its length is 2r = 6. Therefore, the length of ⌢ WX ⌢ expressed as a fraction times π is:6÷π

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Answer: $\sqrt[8]{7^7}$

Step-by-step explanation:

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If Allison needs 13 inches of cloth for sewing project, then Allison will need to buy 33.02 centimeter of cloth.

The length of cloth that Allison needs to buy is =  13 inches ,

The conversion factor is ⇒ 1inch = 2.54 centimeter,

Allison needs 13 inches of cloth, and we know that 1 inch is the same as 2.54 centimeters.

So, to convert 13 inches to centimeters we multiply it by the conversion factor of 2.54 centimeters per inch,

Which is written as;

⇒ (13 inches) × (2.54 centimeters per inch)

⇒ 33.02 centimeters

Therefore, Allison needs to buy 33.02 centimeters of cloth for her sewing project.

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Answer:

250.56

Step-by-step explanation:

we know each dress is 8.70 , and when we buy 40 dresses or more we get 10 percent off the total.

let us first multiply 8.70 x 42 , giving us the total cost as 278.4
there is a 10 percent discount , so 27.84 should be reduced from original price

Final price = 250.56

The slope of the line that contains the points (10, 0) and (-20, -18) is: slope = (change in y)/(change in x) = 3/5.

The slope of a line is the measure of its steepness, and it's found by dividing the change in the y-coordinates by the change in the x-coordinates between two points on the line. In this case, the slope of the line that passes through the points (10, 0) and (-20, -18) can be calculated as follows:

slope = (change in y-coordinates) / (change in x-coordinates)

slope = (-18 - 0) / (-20 - 10)

slope = -18 / -30

slope = 3/5

Therefore, the slope of the line is 3/5.

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Answer:

i think 4<6

Step-by-step explanation:

Answer:

=

Step-by-step explanation:

5j543nn al

Mrs. kenimer had a chocolate bar that weighed 1/2 lb. At recess she ate some of her chocolate bar, now her bar weights 1/4 of a pound. Mrs. kenimer ate 3/8 lb of the chocolate bar.

The British imperial and American cοnventiοnal methοds οf measurement bοth use the pοund as a unit οf mass. The internatiοnal avοirdupοis pοund, which is fοrmally defined as precisely 0.45359237 kilοgrammes and is split intο 16 avοirdupοis οunces, is the term that is currently mοst frequently used. The avοirdupοis pοund's wοrldwide standard sign is lb.

Given,

Mrs.kenimer had a chocolate bar that weighed 1/2 lb or 0.5lb

At recess she ate some of her chocolate bar, now her bar weights 1/4 of a pound or 0.25 of a pound.

Remaining weight of the chocolate bar= ½* ¼ = 1/8 lb

She ate= (1- ¼)= ¾ or 0.75 of a pound

So she ate= ½ * ¾ = 3/8 lb of the chocolate.

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The prοduct οf 5 and 10√72 is 300√2    

The square rοοt οf a number is a value that, when multiplied by itself, gives the οriginal number. It is denοted by the symbοl √, and the number under the symbοl is called the radicand.

Fοr example, the square rοοt οf 25 is 5, because 5 multiplied by itself equals 25. This can be written as √25 = 5

Here we have

5 and 10√72    

As we knοw 72 = 36 × 2

10√72 = 10 [ √(36 × 2) ]

= 10 [√(6 × 6 × 2) ]

= 10 (6) √2

= 60 √2

Hence, the prοduct οf 5 and 10√72 can be calculated as fοllοws

=>  5 × 60√2 = 300√2  

Therefοre,

The prοduct οf 5 and 10√72 is 300√2    

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Answer:

B. inductive

Step-by-step explanation:

An inductive reasoning process involves making a generalization based on specific observations. In the case of the given question, the statement is: "A _______ is an educated guess based on patterns in data figures."

To use inductive reasoning to find the answer, we can follow these steps:

Look for patterns in the data figures. Identify the commonalities between different examples of educated guesses.

Based on these patterns, make an initial generalization about what the blank might be. For example, if we notice that all educated guesses involve making a prediction based on previous observations, we might guess that the missing word is "conjecture."

Test the generalization by looking at additional examples. Do these examples fit the pattern we identified earlier? If so, our initial guess might be correct. If not, we might need to revise our generalization or consider other options.

Continue testing and refining the generalization until we feel confident that it accurately describes the relationship between the given words.

In this case, using inductive reasoning, we can make an educated guess that the missing word is "conjecture," as it fits the pattern of being an educated guess based on patterns in data figures.

Answer:

35

Step-by-step explanation:

Simplification :

7(a-b) as 7 is common
as we know a-b is 5 ,

7 * 5 = 35 in the answer.

Please mark me as the brainliest TQ!

Answer: 35

Step-by-step explanation:

7a - 7b

= 7(a-b)

= 7(5)

= 35

The area of triangle JKL is given as follows:

D. 24 units².

The area of a triangle of base b and height h is given by half the multiplication of these two dimensions, according to the equation presented as follows:

A = 0.5bh.

Considering segment JK as the base, it's length is given as follows:

b = 2 - (-2) = 4 units.

The midpoint of the base has the coordinates given as follows:

The height is the distance between the midpoint of the base and the remaining vertex, hence between (0,4) and (0, -2), thus:

h = 4 - (-2) = 6 units.

Then the area of the triangle is obtained as follows:

A = 4 x 6

A = 24 units².

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The correct equation to find the nth term of the given sequence is an=2n+12, which can be demonstrated by calculating the 4th to 8th terms and verifying that they match the given values.

The formula an=2n+12 can be used to find the nth term of the sequence. This formula states that the nth term is equal to twice the value of n (2n) plus 12 (2n + 12). To demonstrate, for the 4th term of the sequence (a4), we can use the formula and calculate a4 = 2(4) + 12 = 20, which is equal to the given value of a4 = 12. Similarly, we can calculate the other values of the sequence using the same formula: a5 = 2(5) + 12 = 22 (which is equal to the given value of a5 = 14), a6 = 2(6) + 12 = 24 (which is equal to the given value of a6 = 16), a7 = 2(7) + 12 = 26 (which is equal to the given value of a7 = 18), and a8 = 2(8) + 12 = 28 (which is equal to the given value of a8 = 20). Therefore, we can conclude that an=2n+12 is the correct equation to find the nth term of the sequence.

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It’s the average distance to the Mean also measures how far is the data spread apart in the population.

What is Population?

In statistics, a population refers to the entire group or set of individuals, objects, or events that share a common characteristic or feature. The population can be any size, from a small group of people to an entire country or even the whole world.

In order to make statistical inferences about a population, it is often not practical or feasible to study the entire population. Instead, researchers typically take a sample from the population, which is a smaller subset of the population, and use the sample data to make predictions or draw conclusions about the population as a whole.

The average distance to the mean (or average) also measures how far the data is spread apart in the population.

This is commonly known as the standard deviation, which is a measure of the amount of variation or dispersion in a set of data values. A larger standard deviation indicates a greater amount of variability or spread in the data, while a smaller standard deviation indicates that the data points are closer to the mean.

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The evidence from the text suggests that the zombie trick helped the main character feel mentally prepared for the "Zombie 5K" event.

The main character initially expresses doubts about her ability to complete the race. She says, "I was worried that I wouldn't be able to finish the Zombie 5K. I wasn't very confident in my running abilities, and I was afraid I would get too scared by the zombies." This shows that she lacked confidence and had fears about the event.

However, after her friends played the zombie trick on her, the character's mindset changed. She says, "After the zombie trick, I felt more prepared to face the real zombies during the race. I knew it was just a trick, but it helped me overcome my fears and feel more confident." This suggests that the zombie trick had a positive impact on her mental preparation for the race.

Furthermore, the character's behavior during the race supports this idea. She describes how she used strategies to avoid the zombies and successfully completed the race. She says, "I made sure to stay aware of my surroundings and avoid the zombies as best as I could.

I kept reminding myself that they were just people in costumes, and that helped me stay focused on finishing the race." This shows that the character was mentally prepared for the race and able to perform well despite the challenges.

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A right triangle, also known as a right-angled triangle, is a triangle that has one angle measuring 90 degrees.

Right triangles have some unique properties that make them useful in various applications, such as in geometry and trigonometry. For example, the Pythagorean theorem states that in a right triangle, the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse.

We know that;

Tan 45 = 14/x

x = 14

Sin 45 = 14/y

y = 20

Again;

Tan 60 = 16√3/x

x = 16√3 * 1/√3

x = 16

Sin 60 = 16√3/y

y =  16√3 ^ 2/√3

y = 32

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