Jake studied x hours for a big test. julie studied twice as long.

write an algebraic expression for long julie studied.

x times 2

Step-by-step explanation:

the unknown in this problem is the amount of time Jake spent studying. What we do know, is that Julie spent 2 times as long as Jake has. So you take Jake's time and multiply it by 2 sice Julie studied twice as long.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

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: