Sally paid $17.10 for a bed after a 40% discount. How much money did she save?

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.