How many variable terms are in the expression 3x^3y+5x^2-4y+z+9

Figure abcde is a regular pentagon. segment ae is located at a (2, 1) and e (4, 1). what is the perimeter of abcde? 4 units 6 units 8 units 10 units

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

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5