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9966 [12]
2 years ago
5

A-5b=8 solve for a (please show work)

Mathematics
2 answers:
const2013 [10]2 years ago
6 0

Answer:

a-5b = 8

a = 8+5b ⇒ this is the solution

krok68 [10]2 years ago
6 0

Answer:

Answer cannot be specific.

Step-by-step explanation:

So we know that we need to figure out what A is. to be honest, A could be a lot of things when we don't know what b is. B could be 4, and that would make A=12. B could be 5, which would make A=17. We just don't quite know.

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The width of rectangle A is the sum of twice a number and 8. The length of the rectangle is 3 times as great as the width. If th
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Formula for perimeter of a rectangle = 2(L + W)
let the number be x
width = 2x + 8
length = 3(2x + 8)
substitute respectively
96 = 2 (2x + 8 + 3(2x + 8)) open the bracket
96 = 2 ( 2x + 8 + 6x + 24) collect like terms
96 = 2 (8x + 32) open the bracket
96 = 16x + 64
collect like terms
96 - 64 = 16x
32 = 16x
divide both sides by 16
32/16 = 16x/16
2 = x
therefore, the width = 2x + 8 = 2(2) + 8 = 4 + 8 = 12.
and the length = 3(2x + 8) = 6x + 24 = 6(2) + 24 = 12 + 24 = 36.
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3 years ago
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Answer:

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