Asked by Maths.department

Y varies direct proportion with x.if x=5 then y=12,thus find the value of y when x=7.5
Answered by Reiny
y =kx , where k is a constant

given: x=5 , when y = 12
12 = 5k
k = 12/5

so y = (12/5)x

when x = 7.5
y = (12/5)(7.5) = 18
Answered by Firdos
Maths very hard
Answered by Mahder Ayele
Y varies direct proportion with x. If x=5 then y=12 thus find.the value of x when y=84
Answered by Mesele
Student
Answered by Danya
For doing homework done

Answered by Edomawi
Maths is very very easy but if the teacher is bad the subject is so hard
Answered by Biruk
Y varies directly proportion with x. If x=5 then y=12 thus find: the value of x when y=84.
Answered by Juliois
X=ky
X=5 y=12
So
Y=when x=7.5

5/7.5×12/y
5y/5=93.6/5
Y=18.72
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