What is (2m+8y)+(4+9m)+(-2 -3

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

The area of the map is the product of the length and width. write and expression for the area as the product of the two binomials do not multiply