Which equation applies the associative property of multiplication? a.−125 ⋅ (712 ⋅ 19) ⋅ 85 = (−125 ⋅ 712) ⋅ (19 ⋅ 85) b. 12 ⋅ (58 + 36) = (12 ⋅ 58) + (12 ⋅ 36) c. 49 ⋅ (−38) ⋅ 94 = 49 ⋅ 94 ⋅ (−38) d. (−411 − 23) − 34 = −411 − (23 − 34)

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?