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1 year ago

2) Jeff purchased 5 items at the same price

Mathematics

1 answer:

mylen [45]1 year ago

8 0

Answer:

Step-by-step explanation:

because ms maules said 6

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Factor completely.

Marta_Voda [28]

x^2 - 3x - 28 = (x - 7)(x + 4)

answer
first one
(x - 7)(x + 4)

hope it helps

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3 years ago

Witch expression represents the proud t of 3 and (5.4n plus 1.8

Elza [17]

I think the expression is

3t(5.4n + 1.8 )

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3 years ago

I NEED HELP PLEASE IM STRUGGLING

zepelin [54]

I think the answer is either B or C I am not completely sure but I got 36

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2 years ago

Increasing numbers of businesses are offering child-care benefits for their workers. However, one union claims that fewer than 8

Y_Kistochka [10]

Answer: c. -2.15

Step-by-step explanation:

As per given we have:

Null hypothesis : $H_{a}: p\geq0.80$

Alternative hypothesis : $H_{a}: p$

let p be the proportion of firms in the manufacturing sector offer child-care benefits

A random sample of 390 manufacturing firms is selected and 295 of them offered child-care benefits.

sample size : n= 390

sample proportion : $\hat{p}=\dfrac{295}{390}=0.7564$

Test statistic for proportion :

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

Substitute the values , we get

$z=\dfrac{0.7564-0.80}{\sqrt{\dfrac{0.80(1-0.80)}{ 390}}}$

$z=\dfrac{-0.0436}{\sqrt{0.000410256410256}}$

$z=-2.15257752474\approx-2.15$

Hence, the value of test statistic = -2.15

Correct option is c. -2.15 .

4 0

3 years ago

3.232-4= pls help me I need help

Harlamova29_29 [7]

Answer:

the answer is −0.768

I'm just typing random stuff cuz "the answer is to short"

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3 years ago