Let cos(2x) - cos(x) = 0, where 0° sx s 180°. What are the possible values for x? 60° only
120° only
0° or 120°
60° or 180°

Someone answer asap for ! 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

What percent of 18 is 24? and plz explain thx.

How much is $1200 worth at the end of1 year,if the interest rate is 5.5% is compounded quarterly.