Question

Find the value of x. URGENT, please help!?

Answer 1

Answer:

$x=\sqrt{30}$

Step-by-step explanation:

Use the geometric mean to solve for x.  The side x is common to both the triangle that has the base of 3 and the triangle that has a base of 3 + 7, so x is the geometric mean.  Set up that proportion as follows:

$\frac{3}{x}=\frac{x}{10}$ and

$x^2=30$ so

$x=\sqrt{30}$