if a varies jointly as b and the square root c, and a=60 when b=5 and c=36, find a when b=9 and c=225
Math
yasminejeweldegala
Question
if a varies jointly as b and the square root c, and a=60 when b=5 and c=36, find a when b=9 and c=225
1 Answer

1. User Answers LheLheng
Answer:
a=kb√c
60=k5(√36)
60=k5(6)
60=k30
k=60/30
k=2
a=(2)(9)(√225)
a=18(15)
a=270