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4 years ago

14

What is the third side of 5 and 7 phyagorean theorem

2 answers:

Mrrafil [7]4 years ago

7 0

If you want to find the hypotenuse then the formula applied is c^2=a^2+b^2 where c is the hypotenuse. 5^2+7^2=8.6

aivan3 [116]4 years ago

6 0

Look at the attached picture

Hope it will help you...

Good luck on your assignment

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Oxana [17]

Answer:

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Step-by-step explanation:

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3 years ago

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You purchase 2 action figures per week. You have 48 action figures, which is 75% of the total number of action figures you need

balandron [24]

Answer:

64

Step-by-step explanation: In order to find the amount of action figures needed to complete your collection, you divide 48 by 75%. This gives us 64. The reason we divide, is because of inverse operations. If we are going to find 75% of 48, you would multiply 48 by .75. Since this is the opposite, we must divide it.

Also, I'm not quite sure what the question is requesting by asking for what 2 represents. What is the specific skill you are learning in class? Maybe that'll help us figure it out.

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3 years ago

Write (9 +6/) - (1 + 3/) as a complex number in standard form.

kirza4 [7]

I'm assuming the given problem is (9+6i) - (1+3i)

If that assumption is true, then this is what the steps look like

(9+6i) - (1+3i)

9+6i - 1-3i

(9-1)+(6i-3i)

(9-1)+(6-3)i

8+3i

<h3>Answer: 8+3i</h3>

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3 years ago

Just answer question 3,4 and 5 only.. There will have a diagram because the question base on that. One thing, just show the work

irina [24]

Answer:

Step-by-step explanation:

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3 years ago

The U.S. and many other countries have recently tightened airport security. A sociologist is interested in estimating the propor

melisa1 [442]

Answer:

0.0073 < 0.05, which means that we reject the null hypothesis and conclude that the true proportion of interest is higher than 0.7.

Step-by-step explanation:

Conduct a test to determine whether the true proportion of interest is higher than 0.7.

This means that the null hypothesis is: $H_{0}: p = 0.7$

And the alternate hypothesis is: $H_{a}: p > 0.7$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

0.7 is tested at the null hypothesis:

This means that $\mu = 0.7, \sigma = \sqrt{0.7*0.3}$

The sociologist found that 375 of the 500 travelers randomly selected and interviewed indicated that the airports were safe.

This means that $n = 500, X = \frac{375}{500} = 0.75$

Value of the z-statistic:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{0.75 - 0.7}{\frac{\sqrt{0.7*0.3}}{\sqrt{350}}}$

$z = 2.44$

P-value of the test:

Probability of z being larger than 2.44, that is, a proportion larger than 0.75.

This is, looking at the z-table, 1 subtracted by the pvalue of Z = 2.44. S

Z = 2.44 has a pvalue of 0.9927

1 - 0.9927 = 0.0073

0.0073 < 0.05, which means that we reject the null hypothesis and conclude that the true proportion of interest is higher than 0.7.

8 0

3 years ago