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2. It takes 12 hours to fill a pool with two pipes, where the water in one pipe
flows three times as fast as the other pipe. How long will it take the slower
pipe to fill the pool by itself?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.