Mathematics, 20.02.2020 19:28 maddie53116
A block-and-tackle is a machine that uses pulleys to help lift heavy items. A person pulls on one end of a rope
with an effort force. The other end is attached to the item, or load. The table shows the results of testing several
block-and-tackle designs to pull the load one meter off the ground.
Which design has the GREATEST efficiency?
Answers: 3
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Mathematics, 21.06.2019 18:50
The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103
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A block-and-tackle is a machine that uses pulleys to help lift heavy items. A person pulls on one en...
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