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.

Work out the simultaneous equation. Work out the value of x and y 6x+5y=4.5 3x-2y=9

What is 4 to the 3rd power in expanded form?

The area of a square is 121 square units. ind the length of its sides.

A window washer earns $4 per window. Which equation represents the relationship between his total earnings and the number of windows he washes?. A. total earnings = number of windows washed + 4 B. number of windows washed = total earnings + 4 C.

Find the product. 4 1/6 * 1 1/5

If a hat that costs $30 is discounted by 15%, what's the sale price?

Use the interactive spinner to model who among Elisondra and her three friends will order first. Then answer the questions. What is the theoretical probability of the spinner landing on Elisondra's section? Spin the spinner. Who orders first?

In a basket, there are six apples, seven bananas, three pineapples, and nine pomegranates. Janice randomly draws a fruit from the basket and then puts it back in.

If m^2 + n^2 = 18 and mn=7, what is (m-n) ^2

Add - 6.5b+11 and 3.3b-2