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WARRIOR [948]
3 years ago
11

Is someone can help me please please i will give 20 points please

Mathematics
1 answer:
joja [24]3 years ago
7 0
With an inverse function, we essentially solve for x and then switch f(x) (which can be called y) with x. For y=x/8-7, we add 7 to both sides to get y+7=x/8. Multiplying both sides by 8, we get 8*(y+7)=x. Switching y and x, we get 8*(x+7)=y. This is shown as the third option.

For y=20-0.25x, we can subtract 20 from both sides to get y-20=-0.25x. Next, we can multiply both sides by -1 to get 0.25x=-y+20=20-y. Multiplying both sides by 4 (since 1/4=0.25 and we want to find x), we get x=4(20-y). Switching x and y, we get y=4(20-x), which is the first option. I challenge you to do the other two based off of the techniques I used!
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Haleigh split 4/9 of a gallon of juice into 8 cups. How much juice was in each cup?
Brut [27]

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▹ Answer

<em>1/18 of a gallon of juice in each cup.</em>

▹ Step-by-Step Explanation

Since we have 4/9 of a gallon of juice for 8 cups, we will divide to find the amount of juice in each cup.

\frac{4}{9} / 8

Since this operation is division, we have to change 8 to it's reciprocal which is 1/8:

\frac{4}{9}/ \frac{1}{8} = \frac{4}{72} = \frac{1}{18}

Our final answer will be 1/18 of a gallon of juice in each cup.

Hope this helps!

CloutAnswers ❁

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