Simplify the radical the square root of 81 d^6

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)

500 students went on a picnic trip 10 students chapter in each car how many cars were used for the picnic trip