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Mathematics 10 Online
OpenStudy (anonymous):

As the weight held by a spring increases, the length of the spring increases, proportionally. Suppose a 2-lb weight stretches a spring to 15 in., and a 12-lb weight stretches the same spring to 20 in. What is the length of the spring with NO weight attached

OpenStudy (anonymous):

45 + 70X = $150, 70X = 150 - 45 = 105, X = 1.5h.

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