Solve the system of nonlinear equations: 4x - y = 4 x^2 - y = -1

What are the soultion(s) to the quadratic equation 40- x^2=0

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers