SOLUTION: Hi, Please check my answers for the 2 questions below, i dont seem to be getting the write answers : Evalute the following using logarithms : 1) B = CUBE ROOT(28.6

Question 144365: Hi,
Please check my answers for the 2 questions below, i dont seem to be getting the write answers :
Evalute the following using logarithms :
1) B = CUBE ROOT(28.6 / 0.987)
= (28.6 / 0.987)^(1/3)
LOG B = (LOG 28.6 - LOG 0.987)^(1/3)
= (1.46204888)^(1/3)
LOG B = 1.134977619
10^LOG B = 10^1.134977619
B = 13.645
2) A = CUBE ROOT(39304) / 136
= (39304)^(1/3) / 136
LOG A = LOG (39304)^(1/3) - LOG 136
= 1/3 LOG 39304 - LOG 136
= 1.531478917 - (2.133538908)
LOG A = -0.602059991
10^LOG A = 10^(-0.602059991)
A = 0.25
Please tell me were im going wrong, when i work out the question without logs on the calculate i dont get the answer im getting.
Please Help
Rebekah
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
in problem 1) you have
LOG B = (LOG 28.6 - LOG 0.987)^(1/3)
You then equate that to
= (1.46204888)^(1/3)
It should be
LOG B = (1/3)(LOG 28.6 - LOG 0.987)
The rest of your process is correct. Try that and see if that does it

2 is correct. What is not working for you there?

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