Question

Solve for x.

Answer 1

Any ideas?

Answer 2

This is a right triangle and Pythagorean theorem tells us



So you have \(5^2+8^2=x^2\). Does this make sense?

Answer 3

that should say, pythagorean theorem tells us \(a^2+b^2=c^2\)

Answer 4

after we figure out \[5^2 \] and \[8^2 \]
we need x (or c or whatever side is missing) by itself so we need to square root both sides.

Answer 5

ok that's the c part we're missing (the longest side of the triangle-- hypotenuse)

Answer 6

5 squared + 8 squared = x squared
25 + 64 = c squared

Answer 7

good so far..

Answer 8

so what's 25+64 ?