SOLUTION: 2. A student writes down the following as part of her response: a ) 3^2 x 3^3 = 729. and b) 3^-2 = -9. Are her answers correct? If not, explain

Algebra ->  Human-and-algebraic-language -> SOLUTION: 2. A student writes down the following as part of her response: a ) 3^2 x 3^3 = 729. and b) 3^-2 = -9. Are her answers correct? If not, explain      Log On


   

Question 170086: 2. A student writes down the following as part of her response:







a ) 3^2 x 3^3 = 729. and b) 3^-2 = -9.







Are her answers correct? If not, explain why you think her answers are incorrect.







Include in your explanation what she did wrong, if any.







What would you advise her to do instead?


Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
2. A student writes down the following as part of her response:
a ) 3^2 x 3^3 = 729
Correct answer:::: 9*27 = 243
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b) 3^-2 = -9.
Correct answer:::: 3^-2 = 1/3^2 = 1/9
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Cheers,
Stan H.
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Are her answers correct? If not, explain why you think her answers are incorrect.
Include in your explanation what she did wrong, if any.