Which pair of measurements is not equivalent? a.3 hours, 10 minutes and 190 minutesb.240 minutes, and 4 hoursc.350 minutes, and 5 hours, 50 minutesd.480 minutes, and 6 hours

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?