AyshaParveen118 AyshaParveen118

10-02-2021
Mathematics

contestada

xis directly proportional to y.
When x=21, then y=3.
a) Express x in terms ofy.
b) Find the value ofx when y is equal to 10.

Respuesta :

10-02-2021

x = k x y
21 = k x 3
k = 7
x = 7y

x = 7(10)
x = 70

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