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3 years ago

11

Why aren’t voluntary response samples usually representative of the population ?

2 answers:

FromTheMoon [43]3 years ago

7 0

The second choice is correct. An example of this is a voluntary "product feedback surveys" which tend to biased toward the negative. While people with both positive and negative feedback respond overall, customers who have a complaint are more motivated to take the time, and thus are overrepresented.

stira [4]3 years ago

4 0

definitely the second, the people who volunteer usually have a motive to do so and will be the only ones represented.

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The area of a rectangle can be represented by the expression x2 + 4x â€“ 12. The width can be represented by the expression x â€

Lelu [443]

Answer:

x â€“ 2(x2 + 4x â€“ 12)

Step-by-step explanation:

x â€“ 2(x2 + 4x â€“ 12)x â€“ 2(x2 + 4x â€“ 12)

7 0

3 years ago

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RES<br> Find (fºg)(1)<br> Ax) = x2 - 1<br> g(x)= v<br> a 0<br> c. 4.<br> b.<br> d. 18<br> Help pls

slava [35]

Answer:

A

Step-by-step explanation:

So we have the two functions:

$f(x)=x^2-1\\g(x)=\sqrt x$

And we want to find:

$(f\circ g)(1)$

This is the same as:

$f(g(1))$

So, to find the answer, find g(1) first:

$g(x)=\sqrt x\\g(1)=\sqrt1\\g(1)=1$

Now, substitute this value for g(1):

$f(g(1))\\=f(1)$

And plug this into f(x):

$f(x)=x^2-1\\f(1)=(1)^2-1\\f(1)=1-1=0$

Therefore:

$f(1)=f(g(1))=(f\circ g)(1)=0$

Our answer is A

3 0

3 years ago

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Gloria rides a bike 8 miles in 40 minutes.Nanette rides a bike 5 miles in 30 minutes.Who biked the farthest.

Ugo [173]

Gloria biked the farthest.

7 0

3 years ago

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What equation does the model represent?

Vesnalui [34]

It would be 62+23=94 because you'll need to add the tens and the ones, then add it up

I think-_-

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3 years ago

In a class of 35 students, 14 are male. what percent of the class is male?

mars1129 [50]

Total number of students = 35

Number of male students = 14

% of students that are male = $\frac{14}{35} * 100 = \frac{14}{7} * 20 = 2 * 20$ = 40 %

8 0

3 years ago