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2 years ago

Will give brainlist to the best answer if possible!! 10 points please help

Mathematics

1 answer:

Black_prince [1.1K]2 years ago

4 0

Answer:

Step-by-step explanation:

y= -x+18 and y= 3/4x+4

use slope intercept form: y=mx+b

m = slope

b = y-intercept

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Is pi+4 greater than 7?

Eva8 [605]

Answer:

Step-by-step explanation:

actually, it IS 7

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3 years ago

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Can u guys plz give me the answer to number 1-3

jek_recluse [69]

I'm pretty sure it is 5:55

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3 years ago

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.8 parts

Alexxandr [17]

Answer:

The value of the test statistic is $t = 2.67$

Step-by-step explanation:

The null hypothesis is:

$H_{0} = 7.8$

The alternate hypotesis is:

$H_{1} \neq 7.8$

Our test statistic is:

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

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.

In this problem, we have that:

$X = 8.2, \mu = 7.8, \sigma = 0.6, n = 16$

Then

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

$t = \frac{8.2 - 7.8}{\frac{0.6}{\sqrt{16}}}$

$t = 2.67$

The value of the test statistic is $t = 2.67$

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3 years ago

140cm<br> 3 cm<br> 12 cm<br> 8 cm<br> Find surface area?

Mashcka [7]

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3 years ago

I need help on number 17 and 18 on how to find the area of the figure

JulsSmile [24]

17. Area of triangle: 1/2bh
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3 years ago

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