Question

Please help need it quick will give brainliest thanks

Answer 1

Use the Pythagorean theorem:

$x^2+8^2=11^2\\\\x^2+64=121\ \ \ |-64\\\\x^2=57\to x=\sqrt{57}\\\\x\approx7.5$

Answer: C. 7.5

Answer 2

Hey there! :)

For right triangles, you have to use the Pythagorean Theorem

a² + b² = c²

c² - b² = a²

c = 11
11² = 11 × 11 = 121

b = 8
8² = 8 × 8 = 64

121 - 64 = 57

√57 = 7.5

Your answer is C

Hope this helps :)