An artist makes a scale drawing of a building he likes. the building is 90 feet tall and 45 feet wide. if this picture is 3 feet wide how tall will this picture be?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ab=9, and ac=12, find hc.

Factor this polynomial completely x^2-64

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units