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3 years ago

If your head measured 23 1/4 inches, which hat would you buy? Explain your reasoning.

Mathematics

2 answers:

Mrac [35]3 years ago

6 0

Xl maybe ur head will grow
L maybe ur head will shrink
Life is awesome.

lana66690 [7]3 years ago

4 0

Answer: get the XL hat because you don’t want a hat that is too small for you. XL is the best answer

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I need to write fractions as mixed numbers 36/6 20/10 15/8 13/6

Sergio [31]

36/6 = 6

20/10 = 2

15/8 = 1 7/8

13/6 = 2 1/6

Hope this helped!

3 0

3 years ago

Read 2 more answers

Click and drag like terms onto each other to simplify fully. -3-7x+3y-3+2y

Levart [38]

$- 3 - 7x + 3y - 3 + 2y \\ - 7x + 3y + 2y - 3 - 3 \\ = > \: \: - 7x + 5y - 6$

Hope this helps :)

3 0

2 years ago

UCF believes that the average time someone spends in the gym is 56 minutes. The university statistician takes a random sample of

11111nata11111 [884]

Answer:

We conclude that the average time someone spends in the gym is different from 56 minutes.

Step-by-step explanation:

We are given that UCF believes that the average time someone spends in the gym is 56 minutes.

The university statistician takes a random sample of 32 gym goers and finds the average time of the sample was 50 minutes. Assume it is known the standard deviation of time all people spend in the gym is 8 minutes.

Let $\mu$ = population average time someone spends in the gym

SO, Null Hypothesis, $H_0$ : $\mu$ = 56 minutes {means that the average time someone spends in the gym is 56 minutes}

Alternate Hypothesis, $H_A$ : $\mu\neq$ 56 minutes {means that the average time someone spends in the gym is different from 56 minutes}

The test statistics that will be used here is One-sample z test statistics as we know about the population standard deviation;

T.S. = $\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

where, $\bar X$ = sample average time someone takes in the gym = 50 min

$\sigma$ = population standard deviation = 8 minutes

n = sample of gym goers = 32

So, test statistics = $\frac{50-56}{\frac{8}{\sqrt{32} } }$

= -4.243

Since in the question we are not given the level of significance so we assume it to b 5%. Now at 5% significance level, the z table gives critical value between -1.96 and 1.96 for two-tailed test. Since our test statistics does not lie within the range of critical values of z so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region.

Therefore, we conclude that the average time someone spends in the gym is different from 56 minutes.

4 0

3 years ago

The area of the cross section of a sphere at the largest point is 100π square miles. what is the total surface area of this sphe

Firlakuza [10]

The cross-section of a sphere is a circle . The area of a circle can be calculated by the formula A= $\pi\r^{2}$ Where r is the radius of the circle.