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3 years ago

Someone help and plz make sure it’s right

Mathematics

2 answers:

Archy [21]3 years ago

7 0

The answer is b because 80+60=140, -7 and then divide by three you get 11

Ivanshal [37]3 years ago

3 0

Answer:

x=11

Step-by-step explanation:

3x+7+60+80=180

3x+147=180

3x=33

x=11

Hope this helps :D

BTW 180 degrees is how many degrees in a triangle

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Let f(x) = (x − 3)−2. find all values of c in (1, 4) such that f(4) − f(1) = f '(c)(4 − 1). (enter your answers as a comma-separ

Verizon [17]

If the function is $(x-3)^{-2}$ and f(4) − f(1) = f '(c)(4 − 1) then there is not any answer.

Given function is $(x-3)^{-2}$ and f(4) − f(1) = f '(c)(4 − 1).

In this question we have to apply the mean value theorem, which says that given a secant line between points A and B, there is at least a point C that belongs to the curve and the derivative of that curve exists.

We begin by calculating f(2) and f(5):

f(2)= $(2-3)^{-2}$

f(2)=1

f(5)= $(5-3)^{-2}$

f(5)=1

And the slope of the function:

$f^{1}$ (x)= $f(5)-f(2)/(5-2)$

$f^{1}$ (c)=0

Now,

$f^{1} (x)=-2*(x-3)^{-3}$

=-2 $(x-3)^{-3}$

-2 is not equal to 0. So there is not any answer.

Hence if the function is $(x-3)^{-2}$ and f(4) − f(1) = f '(c)(4 − 1) then there is not any answer.

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2 years ago

What is the quotient as a mixed number in simplest form? −4 1/2 ÷ (−2 2/3)

koban [17]

I hope this helps you

-(4.2+1/2) ÷ (-)(2.3+2/3)

-9/2 ÷ - 8/3

9/2× 3/8

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4 years ago

The standard deviation tells us a. the average value of the scores. b. the relative standing of a particular score. c. the skewn

andreyandreev [35.5K]

We can say that the standard deviation tells us <u>the </u><u>dispersion </u><u>of the scores</u>, making <u>option D</u> the correct choice.

<h3>What is the standard deviation?</h3>

A standard deviation (or σ) is a measure of how widely distributed the data is about the mean (μ). A low standard deviation suggests that data is grouped around the mean, whereas a large standard deviation shows that data is more spread out. A standard deviation around 0 suggests that data points are close to the mean, whereas a high or low standard deviation indicates that data points are above or below the mean, respectively.

We use the following formula to compute the standard deviation:

$\sigma = \sqrt\frac{{\sum_{i=1}^{N}\left | x_i - \mu \right | }^2}{N}$

In this formula, σ is the standard deviation, $x_i$ is the data point in the set we are solving for, μ is the mean, and N is the total number of data points.

<h3>How to solve the question?</h3>

In the question, we are asked to tell what standard deviations tell us from the given options.

From the above discussion, we can say that the standard deviation <u>tells us the </u><u>dispersion </u><u>of the scores</u>, making <u>option D</u> the correct choice.

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2 years ago

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At a certain college the ratio of men to women is 6 to 5. If there are 3520 total students how many men are there.

notsponge [240]

Answer:

1920 men are there in college.

Step-by-step explanation:

Given the statement: At a certain college, the ratio of men to women is 6 to 5. If there are 3520 total students.

Ratio states that it is just a comparison between, or a relating of, two different things.

i.e a to b or a: b

Ratio of men to women:

Men : Women = 6: 5

Let x be the number.

Total number of Men in college = 6x and Total number of women = 5x

Since, total number of students = 3520

⇒ $6x + 5x = 3520$

Combine like terms;

11x = 3520

Divide by 11 on both sides we get;

x = 320

Therefore, total number of men in college = 6x = 6(320) = 1920

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3 years ago

A volleyball court has an area of 1,800 square feet. The length of the court is 60 feet. What is the width of the court?

julsineya [31]

Answer: 30 ft

Step-by-step explanation:

Area = l x w

1800 = 60 x w

W = 1800/60 = 30

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3 years ago