4. a varies directly as b3. When a =2, b= 1, find the value of a, when b=3 plzzzzzzzzzzzzzz answer step by step
Answers
Answered by
8
Answer:
easy one
a = kb
2 = k*1
k = 2 --------(1)
when , b = 3 ,
a = k*3
a = 2*3 = 6 (Ans.)
Answered by
7
Answer:
a = 54
Step-by-step explanation:
1. a = 2
b = 1
2. b = 3
a = 2
3. b³ = 3³
4. 2×3 = 6
3×3 = 9
5. 9 = k9
6. 6×9 = 54
Ans. a = 54.
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