02-04-2016
Mathematics

contestada

if f(x) varies directly with x and f(x) = 50 when x = -10, then what is f(x) when x = 15

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mssarkar96 mssarkar96

02-04-2016

f(x)=50 x= -10

If x=1, then f(x)=50/-10 = -5

Therefor, when x=15, f(x) = 15*-5 = -30

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Isaacmusic123 Isaacmusic123

02-04-2016

it is -30 because if x=-10 and f(x)=50 you have to divide 50/-10=-5 then you do x=15 x-5=-30

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