The length of a rectangle is 2 1/2 times its width. The perimeter of the rectangle is 84cm. Find the dimensions of the rectangle

Which is an equation for the nth terms of the sequence 12,15,18,21

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?