Posted by **katy** on Thursday, April 11, 2013 at 9:57pm.

Write in Scientific Notation

1. (3X10to the tenth) (7X10to the -4th)

2. (5X10to the 4th)to the second

Thanks so much!

- Algerba 1 -
**Knights**, Thursday, April 11, 2013 at 10:01pm
1.

3 * 10^4 * 7 * 10^-4

7*3 = 21

10^4 * 10^-4 = 10^0 = 1

21 * 1 = 21

2.1 * 10^1

2. (5*10^4)^2=

25 * 10^8 = 2.5 * 10^9

- Algerba 1 -
**katy**, Thursday, April 11, 2013 at 10:04pm
it needs to be written in scientific notation.

- Algerba 1 -
**Knights**, Thursday, April 11, 2013 at 10:11pm
woops for the first I looked at it wrong...

3 * 10^10 xs 7 x 10^-4

= 21 x 10^6

= 2.1 x 10^7

And ma'm, I believe it is written in scientific notation...

- Algerba 1 -
**katy**, Thursday, April 11, 2013 at 10:13pm
Thanks

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