Question

Could someone help me really quick!

Answer 1

A is the answer to the problem

Answer 2

The triangles are similar triangles, so the proportion of the corresponding sides are the same.

Make a comparison.
$\dfrac{\text{hypotenuse}}{\text{upright side}} = \dfrac{\text{hypotenuse}}{\text{upright side}}$

In this case, you can input the numbers as follows.
$\dfrac{x}{2}= \dfrac{54}{12}$

Solve for x
Move 2 to the right side, and 2 will be a numerator
x = $\dfrac{54(2)}{12}$
x = $\dfrac{108}{12}$
x = 9

The value of x is 9, the answer is first option