Posted by **jo** on Friday, October 9, 2009 at 10:04pm.

would 64974000345 be written 6.4*10^10

or 6.4974*10^10

2) how would you write 7.991*10-10 in scientific notation?

3) does 9.0 have 2 (sf) and 100.0000 have (7sf)?I'm confused about the trailing zeros when it comes to decimal points.These are trailing zeros.

4) What do you mean when you said we do not add powers with different exponents?

5) What is the difference between powers and exponents?

6) h^8*h-^3*h^0=h^5. I thought 0 is 1 exponent!

- math -
**bobpursley**, Friday, October 9, 2009 at 10:10pm
1. If all the digits are significant, then is it is written 6.47974000345*10^10

2. It is in scientific notation already.

3. 2sf, and 7 sf.

4. you do add powers with different exponents, but not powers of different __bases__.

5. no difference.

6. 0 is an exponent,but when adding, it does not change the result a^6*a^0=a^6

remember anything to the zero power is ONE. 45^0=1; a^0=1

## Answer This Question

## Related Questions

- Math - Hi everyone! I am extremely struggling with this questions and was hoping...
- Scientific Notation - Just started learning about the scientific notation, and ...
- Math - Please HELP Me!! A googol is a number written with a 1 followed by 100 ...
- Math! Please Check My Awnser! - Hello! I need some help with math! I have tried ...
- math - please help 5*10(-8 is a power for the ten) That would be 0.00000005 (...
- alberaic method! - how do I convert 0.12... to a fraction using algebraic ...
- 7th grade Math quick help Ms. Sue - Can you check to see if tese are right? 1. ...
- math - how many significant figures do the following numbers have? 1)0.023 2) ...
- 7th grade math questions Scientific Notation - 19. Write the size of a grain of ...
- math - A compressed high resolution chest xray image requires about 8MB of data...

More Related Questions