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3 years ago

What is the surface area of the figure?

1 answer:

8 0

What is the surface area of the figure?Solid Figures, Part 1

A.300 cm2

B.220 cm2

C.390 cm2

D.195 cm2

The surface area of the figure is <span>220 cm2. The answer is letter B.</span>

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Driving through the mountains,Dale has to go up and over a high mountain pass. The road has a constant incline for 7 3/4 miles t

creativ13 [48]

Answer:

6510

Step-by-step explanation:

7.75 x 840 = 6510

8 0

3 years ago

What is the value of n? 133, 142, n

Umnica [9.8K]

I assume that this is a sequence and you need to find the next number in the sequence.

The first two numbers are give as 133 and 142, we can get the difference between them by subtraction as follows:
142 - 133 = 9
This means that adding 9 will generate the next term as follows:
133
133+9 = 142
142 + 9 = 151
This means that : n=151

3 0

3 years ago

Read 2 more answers

About 30% of the population cannot detect any odor when they sniff the steroid androstenone, but they can become sensitive to it

iris [78.8K]

Using the z-distribution, as we are working with a proportion, it is found that there is enough evidence to conclude that the proportion is different of 50%.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if the proportion is of 0.5, that is:

$H_0: p = 0.5$

At the alternative hypothesis, it is tested if the proportion is different of 0.5, that is:

$H_1: p \neq 0.5$ .

<h3>What is the test statistic?</h3>

The test statistic is given by:

$z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}$

In which:

$\overline{p}$ is the sample proportion.

p is the proportion tested at the null hypothesis.

n is the sample size.

In this problem, the parameters are:

$p = 0.5, n = 12, \overline{p} = \frac{10}{12} = 0.8333$

Then, the value of the test statistic is as follows:

$z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}$

$z = \frac{0.8333 - 0.5}{\sqrt{\frac{0.5(0.5)}{12}}}$

$z = 2.31$

<h3>What is the decision?</h3>

Considering a <em>two-tailed test</em>, as we are testing if the proportion is different of a value, with a <em>significance level of 0.05</em>, the critical value is of $|z^{\ast} = 1.96$ .

Since the absolute value of the test statistic is greater than the critical value for the two-tailed test, it is found that there is enough evidence to conclude that the proportion of participants that had improved androstenone-detection accuracy is different of 50%.

More can be learned about the z-distribution at brainly.com/question/26454209

5 0

2 years ago

Please anyone I’ll mark as a branlist

Makovka662 [10]

Answer:

the first option is the answer, r = √6

Step-by-step explanation:

$hypotenuse = \sqrt{opposite {}^{2} + adjacent {}^{2} }$