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Mathematics 9 Online
OpenStudy (averyfatmamajama):

Check my work.

OpenStudy (averyfatmamajama):

What is the simplified form of this expression, written in scientific notation? (3.276×10&5)×400,000÷(3.9×10&6) Enter your answer in the box.

OpenStudy (averyfatmamajama):

My answer is 1.3104 x 10^9

OpenStudy (averyfatmamajama):

I have no idea if that is correct or not.

OpenStudy (mathmale):

Please use ' ^ ' to denote exponentiation, not ' & .' I'd like to see HOW you got your answer before commenting on your correctness.

OpenStudy (averyfatmamajama):

Oops, I pressed the wrong key, I ment ^

OpenStudy (mathmale):

Show me the steps you went thru to obtain your final answer.

OpenStudy (averyfatmamajama):

3.276(105)(400); 0/3.9(106) = 131040000

OpenStudy (averyfatmamajama):

I converted 131040000 into a scientific notation.

OpenStudy (averyfatmamajama):

And then I got 1.3104 x 10^9

OpenStudy (mathmale):

I propose you do the problem this way: separate the numerical values from the powers of 10. (3.276×10^5)×400,000÷(3.9×10^6) would translate to (3.276)(400000) (10^5) ---------------------- (3.9) (10^6) and the 400000 could be re-written as 4*10^5. Evaluate (3.276) (4) --------- * (10^5) (10^5) 3.9 ------------ 10^6

OpenStudy (mathmale):

Check your first answer against your result for the above.

OpenStudy (averyfatmamajama):

I found the answer

OpenStudy (averyfatmamajama):

2.8 x 10^5

OpenStudy (averyfatmamajama):

Am I correct?

OpenStudy (averyfatmamajama):

@mathmale

OpenStudy (mathmale):

Your 2nd answer is quite different from your first. Have you tried to figure out why that is so?

OpenStudy (averyfatmamajama):

Yes sir I did.

OpenStudy (averyfatmamajama):

Or ma'am

OpenStudy (averyfatmamajama):

or sir

OpenStudy (averyfatmamajama):

Because your name is math"male"

OpenStudy (averyfatmamajama):

So I would guess Sir.

OpenStudy (mathmale):

(3.276) (4) --------- = ?? You answered "2.8." Could you defend that answer? Mine differs. 3.9

OpenStudy (mathmale):

(3.276) (4) --------- = ?? You answered "2.8." Could you defend that answer? 3.9 differs from yours.

OpenStudy (averyfatmamajama):

But thankyou

OpenStudy (averyfatmamajama):

I will tell you how I got my answer later.

OpenStudy (mathmale):

Sorry I wasn't faster. Didn't realize you were out of time.

OpenStudy (averyfatmamajama):

I am running out of time.

OpenStudy (averyfatmamajama):

Woah, did I already type that, my bad.

OpenStudy (averyfatmamajama):

Thanks friend. c:

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