Hello! You should select a, b, and c.
Think of it like on a number line, x could be 5, or -5 and still be the same distance from 0. Absolute vales are the same way, so if the answer is 5 or -5, its right! It cant be the last one because x, must only be 5 or -5. Hope that helps!

5 0

2 years ago

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Which relationship between x and y in the equation shows a proportional relationship?

denis23 [38]

Yap,

It seems to me that there are two answers. Both y = .5x and y = 12x. Direct variation is what I'm thinking of so hopefully this helps.

BTW - with Direct Variation, the line will go through (0, 0).

4 0

2 years ago

The mean amount of water in 5 containers is 620 ml the total amount of water in 4 q of the containers is 2750 what is the amount

EleoNora [17]

The correct answer is:

350 ml.

Explanation:

Let x be the amount in the fifth container.

The mean is found by adding all of the amounts together and dividing by the number of containers (in this problem, 5). We know that the total from the other 4 containers is 2750; add this to x, our unknown number. Then we divide by 5 to arrive at our answer of 620.

Algebraically,
 $\frac{2750+x}{5}=620$ 

To solve, multiply both sides by 5:
 $\frac{2750+x}{5}\times 5=620\times 5
\\
\\2750+x=3100$ 

Subtract 2750 from both sides:
2750+x-2750=3100-2750
x=350.

There are 350 ml in the fifth container.

6 0

2 years ago

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