Ask question

Ask question

All categories

MA_775_DIABLO [31]

3 years ago

7

The following is an example of a biased sample of students from a middle school.

1 answer:

eimsori [14]3 years ago

5 0

This answer entirely depends on what is being sampled. Is it whether choir is superior to other classes or not? Most likely very biased. Is it about favorite range to sing at? Maybe a little bit biased. Is it something that has nothing to do with choir? Then most definitely not biased.

Again, it entirely depends on what is being asked. One cannot base just "bias opinion" on "20 students in choir" without knowing what the question being asked is.

~

You might be interested in

7x + 6(-3 + 4x) = 199<br>what does x equal?

tresset_1 [31]

Simplify. Note the equal sign. What you do to one side, you do to the other. Follow PEMDAS.

Isolate the x.

First, distribute 6 to all terms within the parenthesis

6(-3) = -18

6(4x) = 24x

7x - 18 + 24x = 199

Simplify. Combine like terms

31x - 18 = 199

Isolate the x. Add 18 to both sides

31x - 18 (+18) = 199 (+18)

31x = 199 + 18

31x = 217

Isolate the x. Divide 31 from both sides

31x/31 = 217/31

x = 217/31

x = 7

7 is your answer for x

hope this helps

8 0

3 years ago

The length of a rectangle is four times its width. If the area of the rectangle is 324m^2, find its perimeter.

Anuta_ua [19.1K]

Answer:

$perimeter=90$

Step-by-step explanation:

We know that the length is four times the width, so:

$l=4w$

We also know the area, which is 324 m². The formula for area:

$A=l*w$

Insert the known values:

$324=(4w)*w$

Solve for w. Simplify by removing parentheses:

$324=4w*w\\324=4w^2$

Divide 4 from both sides to isolate the variable:

$\frac{324}{4}=\frac{4w^2}{4} \\\\81=w^2$

Find the square root of both sides:

$\sqrt{81} =\sqrt{w^2} \\\\w=9$

The width is 9 m.

We know the width. Now find the length by using the area formula and inserting known values:

$324=l*9$

Solve for l. Divide both sides by 9:

$\frac{324}{9}=\frac{l*9}{9}\\\\ l=36$

The length of the rectangle is 36. (You can check: 4 times 9 is 36)

Now find the perimeter:

$P=2l+2w$

Insert values:

$P=2(36)+2(9)\\\\P=72+18\\\\P=90$

The perimeter is 90 m.

5 0

3 years ago

A store sells snacks by weight. A six ounce bag of nuts costs 3.60 will a two ounce bag cost more than or less than 1.25

densk [106]

5.30 it is correct hope this works brah

6 0

3 years ago

Which function describes the arithmetic sequence shown?<br><br> 1, 7, 13, 19, 25, 31, ...

Taya2010 [7]

Answer:

a(n) = a(1) + 6(n -1)

Step-by-step explanation:

The common difference here is 6. 1 + 6 = 7; 13 + 6 = 19; and so on.

Thus, the function in question is a(n) = a(1) + 6(n -1).

3 0

3 years ago

Please answer this question I need to answer please answer HURRY!!!!

Goryan [66]

Answer:

52

Step-by-step explanation:

$r^{2} -14+8p$

Substitute values given:

$(8)^{2} -14+8(\frac{1}{4} )$

Simplify:

64-14+2

50+2

52

Therefore 52 is our answer

6 0

2 years ago

Read 2 more answers