A. s.a.! this is a similarity in right triangles. next (solve for x)a.) 12b.) 5c.) 12.5d.)

A)

Step-by-step explanation:

To start, notice that the triangle with legs of x and 16 is similar to the triangle with legs of 9 and x. Then, we get the equation 9/x = x/16, so x^2 = 144 and x = 12 or A).

Note: This generalizes to all right triangles, where the altitude squared is the product of the length of the two segments it splits the hypotenuse into.

answer choice a (12)

Step-by-step explanation:

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25