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beks73 [17]
2 years ago
7

Three-quarters of a number is 15. Work out four-fifths of the number.

Mathematics
2 answers:
ValentinkaMS [17]2 years ago
5 0

Answer:

16

Step-by-step explanation:

let the number be x , then

\frac{3}{4} x = 15 ( multiply both sides by 4 to clear the fraction )

3x = 60 ( divide both sides by 3 )

x = 20 , then

\frac{4}{5} × 20 = 4 × 4 = 16

azamat2 years ago
3 0

Answer:

16

Step-by-step explanation:

let the number be x , then

\frac{3}{4} x = 15 ( multiply both sides by 4 to clear the fraction )

3x = 60 ( divide both sides by 3 )

x = 20 , then

\frac{4}{5} × 20 = 4 × 4 = 16

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(a) find parametric equations for the line of intersection of the planes x + y + z = 2 and x + 7y + 7z = 2
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Step-by-step explanation:

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Linda deposited $4000 into an account with 5.7% interest, compounded monthly. Assuming that no withdrawals are made, how much wi
alina1380 [7]
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