Use the order of operations to evaluate the expression below.
5 + 7 • 2 - 90 / 3 + 8 - 1

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

Tommy buys a sweater that is on sale for 40% off the original price. the expression p -0.4p can be used to find the sale price of the sweater, where p is the original price of the sweater. if the original price of the sweater is 50, what is the sale price?

How can you find the magnitude of a vector, v = < x,y > , where the horizontal change is x and the vertical change is y?