A two digit number is 6 times its singles digit. The sum of the digits is 6. Find the number
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Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

V=x^4-y^4 pick three expressions that can represent the three dimensions of the prism (each in meters)

Atourist boat is used for sightseeing in a nearby river. the boat travels 2.4 miles downstream and in the same amount of time, it travels 1.8 miles upstream. if the boat travels at an average speed of 21 miles per hour in the still water, find the current of the river.