Can someone help me please this is for a quiz and it’s due in a hour i’ll give brainliest

I think the answer is 16.

Step-by-step explanation:

It seems that the smaller triangle's lengths are the square roots of the larger triangle's lengths. 3^2=9 so 4^2=16.

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:

english, cause i can’t you