Pizza is served in the school cafeteria every fourth school day. tacos are served every third school day. both pizza and tacos were served today. in how many school days will pizza and tacos be served on the same day again?

Write a corresponding real world problem to represent 2x - 125=400

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.

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?