If x + y ≥ a, x - y ≤ -1, and the minimum value of z = x + ay = 7, what is a?

What is the standard form of -5x^2+2x^4-11+x^3+3x

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle