∠A and ∠B are complementary angles. If m∠A = (2x + 18) ° and m∠B = (4x + 12) ° , find m∠A

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Acircular garden with radius of 8 feet is surrounded by a circular path with a width of 3 feet. what is the approximate area of the path alone? use 3.14 for π

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212