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denpristay [2]
3 years ago
10

jamie is n years old. brian is twice as old as jamie. in 8 yrs, morgan will be 2 yrs more than half of brian and jamies combined

present age. how old is morgan today?
Mathematics
1 answer:
Dimas [21]3 years ago
3 0

Jamie's age is n. (given)

Brian's age is 2n. (given)

Half of Brian and Jamie's present age is (n +2n)/2 = 3n/2.

Let m represent Morgan's age now. Then

... m + 8 = 2 + 3n/2 . . . . . in 8 years, Morgan's age will be 2 more than ...

Subtract 8 to find Morgan's present age:

... m = 3n/2 - 6 . . . . Morgan's present age

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8 0
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castortr0y [4]

<em>Answer: h = 120 ft;    w = 80 ft </em>

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<em />

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<em>The total amount of fence used is:</em>

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<em>We derive this and equal zero to find its maximum:</em>

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<em>   Solving for h:</em>

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<em>h = 120 ft.  Replacing this into eq3:</em>

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<em>w = 80ft</em>

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<em>Therefore the maximum area is:</em>

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<em>A = 9600 ft^2</em>

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