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3 years ago

M thanks for th help

Mathematics

2 answers:

svetlana [45]3 years ago

7 0

Since this is a right triangle, we can use trigonometry. We will use one of the three main trigonometric functions: sine, cosine, or tangent.

Remember: SOH-CAH-TOA

Looking at angle V, we know the opposite side and the adjacent side. Therefore, we should use the tangent function.

tan(V) = 3/6

To solve, use the inverse tangent function (tan^-1) on your calculator.

V = 26.6 degrees

Hope this helps!

tangare [24]3 years ago

4 0

Step-by-step explanation:

here's the answer to your question

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Sam thinks that his MP2 average grade will be an 80. He received the following scores: 90, 80, 75, 90, 85. Is he correct?

strojnjashka [21]

Answer:

8.4

Step-by-step explanation

7 0

3 years ago

Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800. A researcher from the a

Doss [256]

Using the z-distribution, it is found that she should take a sample of 46 students.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.

Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800, hence, by the Empirical Rule the standard deviation is found as follows:

$6\sigma = 800 - 200$

$6\sigma = 600$

$\sigma = 100$

The sample size is n when M = 29, hence:

$M = z\frac{\sigma}{\sqrt{n}}$

$29 = 1.96\frac{100}{\sqrt{n}}$

$29\sqrt{n} = 196$

$\sqrt{n} = \frac{196}{29}$

$(\sqrt{n})^2 = \left(\frac{196}{29}\right)^2$

n = 45.67.

Rounding up, a sample of 46 students should be taken.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

4 0

2 years ago

The force of an object (f) is equal to its mass (m) times it's acceleration (a) this the formula for calculating force is f= ma.

aivan3 [116]

Force/Mass = Acceleration

3 0

3 years ago

Read 2 more answers

What is the length of AB when A is (-7,-6) and B is (1,0)

NemiM [27]

Answer:

The answer is

<h2>10 units</h2>

Step-by-step explanation:

The distance between two points can be found by using the formula

$d = \sqrt{( {x1 - x2})^{2} + ({y1 - y2})^{2} } \\$

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

A (-7,-6) and B (1,0)

The distance between them is

$|AB| = \sqrt{( { - 7 - 1})^{2} + ({ - 6 - 0})^{2} } \\ = \sqrt{ ({ - 8})^{2} + ({ - 6})^{2} } \\ = \sqrt{64 + 36} \\ = \sqrt{100} \: \: \: \: \: \: \: \:$

We have the final answer as

<h3>10 units</h3>

Hope this helps you

5 0

3 years ago

-136=-8(7-2x) what is the value of x

serg [7]

Answer:

x=-5

Step-by-step explanation:

hope i helped

5 0

3 years ago