The value of 7mn to the 2power, for m = 3 and n = -2

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm