Evaluate the expression. Assume that all the angles are in Quadrant I. cos (arctan(sqrt3/7))

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

Vinny is interviewing for a job.he wants his take home pay to be at least $42,000.what is the least salary he can earn if he pays 25% income tax?

Use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2 + 9 = −26 −3 − 7 = 13