Please I'm on a test I need it quick. What is the standard form of the equation -27 = -10x - 7x^2 ?​

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

Using elimination, what is -4x+2y=-12 4x+8y=-24

Atriangle abc has two side lengths of 28 ft. and 24 ft. if angle c is 91°, what's the measurement of angle b?