30-03-2018
Mathematics

contestada

X and y vary directly and x=6 when y=42, find k. What is y when x=12?

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zizoux07p0ac3m zizoux07p0ac3m

30-03-2018

since x and y are directly proportional , so x = ky

6 = 42k
k = 6/42 = 1/7

12= (1/7)y
y = 84

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Аноним Аноним

30-03-2018

The answer would be 21 i think.

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