All categories

3 years ago

Which choice is equivalent to the expression? please help!

Mathematics

1 answer:

Shalnov [3]3 years ago

6 0

the answer is option e. *answer needs to be 20 characters long this should do :)

You might be interested in

Joey collects baseball cards. He already has 245 and for his birthday, each of his 12 friends bought him 25 more. How many baseb

lina2011 [118]

Answer:545 baseball cards

Step-by-step explanation:hope this helps!

6 0

3 years ago

Find the midpoint of the line segment with end coordinates of:(−1,7) and (3,−2)

SOVA2 [1]

Answer:

Step-by-step explanation:

mid point formula = (x1+x2/2 , y1+y2/2)

hence putt the values we get,

mid point = ( -1+3/2 , 7-2/2)

= (1 , 2.5)

5 0

3 years ago

Can someone explain the question to me?

Lelechka [254]

Whats the question that u need help with?

8 0

3 years ago

A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 434 gram setting. It is

yan [13]

Answer:

No, there is not sufficient evidence to support the claim that the bags are underfilled

Step-by-step explanation:

A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 434 gram setting.

This means that the null hypothesis is:

$H_{0}: \mu = 434$

It is believed that the machine is underfilling the bags.

This means that the alternate hypothesis is:

$H_{a}: \mu < 434$

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.

434 is tested at the null hypothesis:

This means that $\mu = 434$

A 9 bag sample had a mean of 431 grams with a variance of 144.

This means that $X = 431, n = 9, \sigma = \sqrt{144} = 12$

Value of the test-statistic:

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

$z = \frac{431 - 434}{\frac{12}{\sqrt{9}}}$

$z = -0.75$

P-value of the test:

The pvalue of the test is the pvalue of z = -0.75, which is 0.2266

0.2266 > 0.01, which means that there is not sufficient evidence to support the claim that the bags are underfilled.

7 0

3 years ago

Use the function graphed on the coordinate plane below.

crimeas [40]

Answer:

Answer #3

Step-by-step explanation:

Also, this is Algebra 2, so it should be in the high school section.

6 0

3 years ago