In sound and harmonics, the frequency of a vibrating string varies inversely to its length. a guitar string 20 inches long vibrates at a frequency of 400 cycles per second. find the frequency of a 35- inch string.

The triangles are similar. what is the value of x? show your work.

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

Plz hurry finals a paper cup in the shape of an inverted cone is 8 inches tall and has a radius of 1.5 inches. how much water can the cup hold? use 3.14 for pi. round the answer to the nearest tenth. a) 12.6 cubic in. b) 18.8 cubic in. c) 37.7 cubic in. d) 56.5 cubic in.