What are the solution(s) to the quadratic equation 40 − x2 = 0?

The height of a triangle is 4 in. greater than twice its base. the area of the triangle is no more than 168 in.^2. which inequalitycan be used to find the possible lengths, x, of the base of the triangle?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Lines b and c are parallel. what is the measure of 2? m2 = 31° m2 = 50° m2 = 120° m2 = 130°