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Whitepunk [10]
3 years ago
7

College Math!!! I did the first half of the question, I just need the bottom half of it.

Mathematics
1 answer:
ella [17]3 years ago
7 0

Answer:

-49

Step-by-step explanation:

\int _{-5}^{-2}\:\left(8\:w\left(r\right)-3\right)dr = \int _{-5}^{-2}\:8\:w\left(r\right)dr -3 (-2 -(-5)) = 8 \int _{-5}^{-2}\:\:w\left(r\right)dr -9 =8(-5) -9 = -49

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Will is twice as old as Jill. Three years ago, Jill's age was two fifths of Will's age then. How old is each now?
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"Will is twice as old as Jill."

                       Jill's age . . . . .   J
                       Will's age . . . . 2J .

"Three years ago . . .

                       Jill's age then . . . . .   J - 3
                       Will's age then . . . . 2J - 3

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Multiply
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Subtract  2J
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Add  7.5
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Multiply
each side by  2 :                J            =       9

Jill is  9  y.o. now.
Will is 18 y.o. now.

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