Igot 67, is it right? solve for angle a of the right triangle

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.

What is (28 + 7 + 6 + 3) x 1/2 show your work

What is the probability of rolling a single die greater than 4