What is the value of x in the figure below? If necessary, round your answer to
the nearest tenth of a unit.

Answer:
D. 9.5
Step-by-step explanation:
x is the altitude of the right triangle.
Thus, we would apply the right triangle altitude theorem, which is:
h = √(ab)
Where,
h = x
a = 7
b = 13
Plug in the values
x = √(7*13)
x = √91
x = 9.5 units (nearest tenth)