Mathematics, 14.12.2020 21:30 coastieltp58aeg
A cistern can be completely drained by a pipe in 6 hours. It can be filled by two pipes in 4 hours and 5 hours, respectively. How many hours will the empty cistern take to fill if all the pipes are running?
If x is the time to fill it, which of the following equations could be used to solve for t?
4x + 5x - 6x = 1
4x + 5x = 20
15x + 12x - 10x = 60
Answers: 3
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Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap
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A cistern can be completely drained by a pipe in 6 hours. It can be filled by two pipes in 4 hours a...
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