Asked by Sam

8.A number raised to a negative exponent is negative. Is it always , never, or sometimes.

7. Evaluate 1/2a^-4b^2 a = -2 and b = 4 remember a^to the negative 4


6. Simplify. Write in scientific notation. (9 x 10^-3)^2


Thanks to anyone who helps right away and need right answer from the people who have already taken this test.
Answered by Ms. Sue
http://www.jiskha.com/display.cgi?id=1360017689
Answered by Evan
Miss sue did you notice the answer you gave me the person who did it didn't do it right because its to the negative 4 power thanks . Can you try to solve it on your own? Thanks if you do.
Answered by Evan is the same as Sam
Oh Sam and me are the same person in this question.
Answered by Reiny
Please try to stick with one name.

If you had looked carefully at the solution I gave you before, you would have noticed that I took care of the
a^-4 by converting it to 1/a^4

Here is what I did, look it over carefully

#7 , the way you typed it ... it would be

(1/2)a^-4 b^2
= (1/2)(1/(-2)^4 (4)^2
= (1/2)(1/16)(16) = 1/2
Answered by Evan
Oh thankyou . I'm sorry for changing my name . So I really just put m original name . I was thinking that you have to change your name in order to put in another question,. Thanks oh my real name is Evan . So that's what I'm going to put no on. Thank you. And did you do the test before with the same quetions ? If so can you give them all to me. I just been really having a lot of confusion . I also know how to do this its just I'm tired and need the answers to go on the next subject . THank You
Answered by Algebra student
1. B. 1/45
2. A. mq^2/n^4
3. C. 4.2 x 10^-3
4. A. 6,120
5. D. 4 x 10^5
6. A. 8.1 x 10^-5
7. B. 1/2
8. C. Sometimes
9. A. 64x^8y^11
10. C. 1.28r^2/t^9
Answered by MasterReaperS
Algebra Student is correct!
Answered by Jackie
Thank you! I knew how to do it but I kept on second guessing myself
Answered by False Finder
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Answered by williy
yea false finder is wrong
THE ANSWERS ARE CORRECT 100%
Answered by Lilly
Hey willily
Answered by Anonymous
Algebra student is 100% correct! False finder is 100% incorrect! Stay safe!
Answered by Alexander
Algebra student is still correct in 2022
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