Question

Solve for x to the nearest tenth.

Answer 1

8.9

Explanation:

There are no letters to define this properly, but the hypotenuse of the triangle with the sides 2 and 4 is = √(2²+4²) = √20 (pythagorean theorem)

Now we can find x, using pythagorean theorem again.

√20²+ x² = 10²

100 - 20 = x²

x = √80 = 4√5 ≈ 8.9

Cheers!