Element X decays radioactively with a half life of 11 minutes. If there are 180 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to
decay to 17 grams?
y = a(.5)

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

Question 27 of 28 1 point what is the slope of the line shown below? (3,-2) (2,-4)