Which of these factors is an advantage to using credit cards? a. no debts b. no identity theft c. no fees or charges d. good record keeping

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16