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OpenStudy (anonymous):
28a/4a^3= A. 7a^2 B. 7/a^2 C. 1/7a^2
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OpenStudy (anonymous):
answer is B. quite clear cut, u need an explanation?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
okay. \[28a /(4a ^{3})= (28/4) * ( a / a ^{3}) = 7 * 1/ a ^{2}= 7/a ^{2}\]
OpenStudy (anonymous):
ty
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