The expression describe the number that is 8 to the left of -8 on the number line

What is the smallest integer n such that n\sqrt{2} is greater than 20

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17