Which set of values could be the sides lengths of a 30-60-90 triangle

49xy +34y - 72z. determine the degree of the polynomial

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

What is the geometric mean of 3 and 7? a) square root of 21 b) 2 square root of 6 c) 2 square root of 7 d) 21