A pool can be filled by one pipe in 4 hours and by a second pipe in 12 hours. How long will it take using both pipes to fill the pool?

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a man travels from town X to town Y at an average rate of 50 miles an hour and returns at an average rate of 40 miles an hour he takes a half hour longer than he would take if he made round trip at an average 45 miles an hour what is the distance

A CD is shaped like a circle with a diameter of 12 cm. To the nearest centimeter, what is the circumference of the CD?

What is the volume of a cylinder with a radius of 7 cm and height of 10 cm? In terms of pi.

If you see a figure of a triangle that has three angles with the same measurement (all 60, what type of a triangle is it?

What is 1.62 in a fraction

A bag contains green marbles and red marbles, 58 in total. The number of green marbles is 4 more than 5 times the number of red marbles. How many green marbles are there?

How do I solve 2/7=2x

the soccer league needs to transport all the way to 33 players to tournament if 4 players can ride in one car how many cars are needed

The graph of f (x) = x + 1 is shown in the figure. Find the largest δ such that if 0 < |x - 2| < δ then |f (x) - 3| < 0.4.