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Answer:c=21,600
Step-by-step explanation:
So the given equation here is c=am^3/4
Where a=72 and m=400 substitute the formula
c=72×400^3/4
Get the decimal value of 3/4
c=72×400×0.75
Then multiply it all then we get c=21,600
To be sure that a is equal to 72 i have a solution that will make the equation true
The given solution is c=am^3/4 where c=21,600 and m=400 subtitute
21,600=a 400^3/4
Get the decimal of 3/4 to get the decimal of 3/4 just divide 3÷4 which the answer is 0.75
Then multiply the decimal and 400
21,600=a 400×0.75
Which the answer is
21,600=a 300
Divide both sides by 300
21,600/300=a 300 by 300
Cancel out 300/300 then divide 21,600
Which the answer is
72=a