I need help please :) Answer opts. 35 30 22 28

Get a list of all the music students in the eighth grade. Randomly select enough students to get a sample from the population. Ensure that the selection is completely random so the sample is not biased.

6 0

4 years ago

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A grocer has 36 apples and 20 pears. The grocer arranges the fruit into groups that have the same ratio of apples to pears as th

cupoosta [38]

Answer:

Therefore no of apples in that group is 18

Step-by-step explanation:

Given:

No. of apples = 36

No. of pears = 20

Also it is given that grocer arranges the fruit into groups that have the same ratio of apples to pears as the whole collection of fruit.

first we find the ratio of apples and pears in whole collection which is given below

No. of apples/No. of pears = 36/20 = 9/5

Now its a problem of ratio

It is given that no of pear in one group is 10

Let the no of apples in that group be X

According to the question

No. of apples in whole collection/ No. of pear in whole collection = No. of apples in the group/ No. of pears in the group -------------> A

9/5 =X/10

=> X = (9*10)/5 = 18

Therefore no of apples in that group is 18.

8 0

3 years ago

Find the mean proportional for each pair. SHOW YOUR SOLUTION 1. 6, 24

Bingel [31]

Answer:

The mean proportional of 6, and 24 will be 12

Step-by-step explanation:

We know that the Mean proportional of two

numbers, x, and y : $\sqrt{xy}$

Therefore, the mean proportional of 6, and 24

$=\sqrt{6\times 24}$

$=\sqrt{144}$

$\mathrm{Factor\:the\:number:\:}\:144=12^2$

$=\sqrt{12^2}$

$\mathrm{Apply\:radical\:rule}:\quad \sqrt[n]{a^n}=a$

$\sqrt{12^2}=12$

$=12$

Therefore, the mean proportional of 6, and 24 will be 12.

5 0

3 years ago