In a triangle, the height of a triangle, h, is measured by the formula h=2A/b where A = area of a triangle and b = base of a triangle. Solve the formula for b

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

1. perpendicular

2. parallel

3. perpendicular

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