A building has 15 rooms all in a row. One room is the lobby, which is 21 m long. 8 of the rooms are 10 m long, and the other
6 rooms are 14 m long. What is the total length of the building?

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.

Which graph of a hyperbola represents the equation 16x^2-y^2=16