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Mathematics 20 Online
OpenStudy (anonymous):

The distance d when a spring is stretched by a hanging object varies directly as the weight w of the object. If the distance is 46 cm when the weight is 4 kg, what is the distance when the weight is 7 kg?

OpenStudy (amistre64):

d relates directly to w when w=4; d=46 4 =46 makes no sense, since they are NOT equal; what constant of variation (k) should we introduce into the relationship to make them be able to see eye to eye? 4k = 46 ; k=?

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