3 years ago

If a varies directly as b and a=3 when b=12, what is the value of a when b=18?

Mathematics

1 answer:

Zepler [3.9K]3 years ago

4 0

Answer:

a is proportional to b

a=kb

k is proportionality constant

k =a/b =3/12 =1/4

k=1/4 = a/b=a/18

1/4=a/18

a=18/4 =9/2 =4.5 answer

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Step-by-step explanation:

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i hope its correct and helful

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