A rectangle's length and width are in a ratio of 7:3. The area is 84 square feet. What are the length and width?
length =
feet
width =
feet

Do 12/14 and 8/10 have the same value? explain your answer.

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.