Help me answer all these questions pls

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:

the volume is the product of the area of the base, 3x(3x+4), and the height, 3x-1

step-by-step explanation:

the second option

step-by-step explanation: