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3 years ago

PLEASE HELP ASAP!!!!!Test Grade!!!!!!!!please incude step by step explination

Mathematics

2 answers:

AleksandrR [38]3 years ago

6 0

<h2> the answer is </h2>

D. 10

hope it helps

<h3>step-by-step explanation</h3>

Mariulka [41]3 years ago

4 0

The answer is D. 10. Let me know if you want me to show my work

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The director of the library believes that 14% of the library's collection is checked out. If the director is right, what is the

Ksivusya [100]

Answer: 0.2643

Step-by-step explanation:

Let p be the population proportion and $\hat{p}$ be the sample proportion .

As per given question , we have

$p=0.14\\\\ \hat{p}=0.13\\\\ n=478$

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

$z=\dfrac{0.13-0.14}{\sqrt{\dfrac{0.14(1-0.14)}{478}}}\\\\=-0.630087269176\approx-0.63$

The required probability ( using z-table ):-

$P(z$

Hence, the probability that the proportion of books checked out in a sample of 478 books would be less than 13% = 0.2643

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4 years ago

7 - 12c = 43 show work and check plz

Svetradugi [14.3K]

The answer is -3

-12c = 43 - 7
-12c = 36
÷ -12 ÷-12
c = -3

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3 years ago

If there are 205 students in the school, which is the best estimate of the number of students that are in the 5th grade?

Mila [183]

Answer:

34 people

Step-by-step explanation:

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3 years ago

Gisele has $5.90 in quarters and nickels. If Gisele has 16 more nickels than quarters, how many quarters does she have? [I don't

krok68 [10]

Answer:

See below

Step-by-step explanation:

Quarters= 25(x)

Nickels =5(x+16)

25x+5(x+16)=590 (no decimal)

If you solve for x, you’ll get the number of quarters.

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3 years ago

parallel lines r and s are cut by two transversals, parallel lines t and u. Which angles are corresponding angles with angle 8?

Anuta_ua [19.1K]

Option A is correct answer

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3 years ago