## anonymous one year ago What is the quotient written in scientific notation? 2*10^21/8*10^3 A 2.5*10^6 B 2.5*10^17 C 0.25*10^18 D 0.25*10^7

1. anonymous

2. anonymous

Ok

3. anonymous

I think its C but I'm not sure

4. anonymous

The answer would end up being B. Because, you would actually divide the numbers and just subtract the exponents. You would only subtract the exponents when you're dividing though. But when you're say, multiplying, you'd add the exponents. Make sense?

5. anonymous

yea can you help me with one more?

6. anonymous

I don't see why not ^.^

7. anonymous

What is the product written in scientific notation? (6.5*10^-7)(4*10^-17 A2.6*10^-12 B 2.6*10^-11 C 2.6*10^-10 D 2.6*10^28

8. anonymous

I believe it is D, but I'm honestly not 100% on that one.

9. anonymous

siri says its not D

10. anonymous

Okay, well I'm sorry I don't know this one :c

11. anonymous

thanks

12. UnkleRhaukus

$(6.5\times10^{-7})(4\times10^{-17}\\ =(6.5\times4)\times10^{-7-17}$

Find more explanations on OpenStudy