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velikii [3]
2 years ago
5

Marie wants to know the most popular car for parents. She plans to survey the people entering the mall from 10:00 a.m. to 11:00

p.m. What can Marie do to make sure her survey is valid?
A. Marie's sample is valid.
B. Marie should also survey people entering the grocery stores.
C. Marie should make sure she surveys both the fathers and mothers.
D. Marie should make sure she surveys the children as well as the parents.
Mathematics
1 answer:
Andreyy892 years ago
3 0

Answer:

C. Marie should make sure she surveys both the fathers and mothers.

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The total cost of four pens and seven mechanical pencils is $9.73. The cost of each mechanical pencil is 0.75 cents. Which repre
azamat

Answer:

(C) $1.12

Step-by-step explanation:

Multiply .75 by 7 to get the total pen cost. Then subtract that from $9.73 to get the total pencil cost, which is $4.48. Then divide by 4 since that is the amount of pencils.

Hope this helps

6 0
3 years ago
No jk drtyguhiytr5tyguhigyft fyguhijk
Artemon [7]

Answer:

1232

Step-by-step explanation:

13/91= 176/x

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8 0
3 years ago
Which of the following is an extraneous solution of the square root of -3x-2=x+2
yarga [219]

Answer:

x=-6 is an extraneous solution

Step-by-step explanation:

we have

\sqrt{-3x-2} =x+2

squared both sides

-3x-2=(x+2)^2

-3x-2=x^2+4x+4

x^2+7x+6=0

solve the quadratic equation by graphing

The solution is x=-6 and x=-1

see the attached figure

<u><em>Verify each solution</em></u>

substitute the value of x in the original expression

For x=-6

\sqrt{-3(-6)-2} =-6+2

\sqrt{16} =-4

4=-4 ----> is not true

so

Is an extraneous solution

For x=-1

\sqrt{-3(-1)-2} =-1+2

\sqrt{1} =1

1=1 ----> is true

so

Is the solution

4 0
3 years ago
What is a parallel slope for the line y = 2x + 2?
ArbitrLikvidat [17]

Answer: 2

Step-by-step explanation:

The slope is equal to 2 by it being in the slope place of y=mx+b

5 0
3 years ago
What is 0.98 rounded to the nearest thousandth?
aksik [14]
0.98 is already rounded
it may also be asking for 0.980, which is equal but shows the thousandth place
6 0
3 years ago
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