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Posted by **TiffanyJ** on Tuesday, January 18, 2011 at 9:07pm.

1. The quotient of a to the 8th power and a to the 8th power? a

2. The quotient of -x to the 5th power and -x? -x to the 4th power

3. (15/5)(n to the 9th power/ n)? 3n go the 10th power

Neutral water has a pH of 7. Each one-unit decrease i the pH means that the solution is 10 times more acidic. How much more acidic vinegar is than baking soda if vinegar has a ph of 3 and baking soda has a ph of 9? I think the answer is 10 to the 6th power but I don't know how to write out my work.

- Pre-Algebra -
**helper**, Tuesday, January 18, 2011 at 9:15pmif this is what you mean

1) a^8/a^8 = 1

2) -x^5/-x^4 = x

3) 15/5 * n^9/n = 3n^8

Also, use separate posts for 2 different questions/subjects

- Pre-Algebra -
**TiffanyJ**, Tuesday, January 18, 2011 at 9:18pmyes and sorry all the questions I asked are on the same homework paper

- Pre-Algebra -
**helper**, Tuesday, January 18, 2011 at 9:26pmvinegar - pH 3

baking soda - pH 9

9 - 3 = 6 units diff.

10 x 6 = 60x as acidic

10^6 = 1 million, so I can't see how that is right

10^1.77815 = 60

I am not a tutor, so you might want to repost this as a separate question

- Pre-Algebra -
**TiffanyJ**, Tuesday, January 18, 2011 at 9:27pmOkay thank you

- Pre-Algebra -
**helper**, Tuesday, January 18, 2011 at 9:28pm:) that's ok. also, you will have better response if posted separate.

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