Question

Find the value of X express each answer as a decimal rounded to the nearest tenth.

Answer 1

x = 15.6

Explanation:

use the pythagorean theorem:

a² + b² = c²

a = 9

b = x

c = 18

(9)² + x² = (18)²

81 + x² = 324 subtract 81 from both sides

x² = 243 take the square root of both sides

x = √243

x = 15.6