SOLUTION: Please help me with this problem Ive been out of school for awhile Im kind of rusty!!!! 4.242 * 10^2 ___________ 2.10 * 10^-1

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Please help me with this problem Ive been out of school for awhile Im kind of rusty!!!! 4.242 * 10^2 ___________ 2.10 * 10^-1       Log On


   

Question 21200: Please help me with this problem Ive been out of school for awhile Im kind of rusty!!!!
4.242 * 10^2
____________
2.10 * 10^-1
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
well, use a calculator?

if you need to do it by hand, then... 4.242x10^2 is 424.2

So %28424.2%29%2F%282.1x10%5E%28-1%29%29

424.2/2.1 is 202 so we have %28202%29%2F%281x10%5E%28-1%29%29 which can be thought of as %282.02x10%5E2%29%2F%281x10%5E%28-1%29%29 which then becomes 2.02x10%5E3 which is 2020.

This is a fair bit of messing around with numbers, but is all good practice for you.

jon.