watermelon45 watermelon45

22-08-2020
Mathematics

contestada

A is directly proportional to x and inversely proportional to y. If A=20 when x=6 and y=9, what is the value of A when x=9 and y=6?

A) 1/20
B) 30
C) 45
D) 60

Respuesta :

opebiyifunmilola opebiyifunmilola

22-08-2020

A=45

A=kx/y

where k is constant

substituting the values for k

k= 20×9/6=30

when x=9, y=6

A= 30×9/6=45

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