Search this site:

Today's SAT Tip of the Day


College & Grad School
School Search
Admissions Tips
School Rankings
Test Prep


Word of the Day
sustain
Definition: (verb) to keep in existence or continue.
Petersons.com
Add Word of the Day to your personalized My Yahoo! page:
Add to My Yahoo! View RSS Feed
About My Yahoo! and RSS »

Math Teaser
Problem
Each member of a research group visited either the Virgin Islands or Hawaii...
Petersons.com

SAT* Tip of the Day
So What?
Math questions involving two equations and two unknowns can usually be combined into one equation with one unknown.
Petersons.com
Add SAT* Tip of the Day to your personalized My Yahoo! page:
Add to My Yahoo! View RSS Feed
About My Yahoo! and RSS »

 
Provided by  Petersons.com
Fact:
Exponents can be multiplied when their bases are the same--you take the base and add the exponents.

What this means to me:
This is an important rule to remember because it will help you simplify a lot of equations. Take the equation 23 x 24. Since both exponents mean multiplying 2 by itself (2), if you combine the exponents you're just saying to multiply 2 by itself more times, which is the same thing as writing it out in two exponents. Combining the exponents gives us 27.Simplify each one with your calculator--you'll see that they are equal.

Visit our partner's site
Petersons.com
  Take a FREE Full-Length Practice SAT
  Questions About College? Chat With an Expert
  Peterson's Can Help You Ace the SAT Essay
 

*Test names and other trademarks are the property of the respective trademark holders.
Copyright © 2007 Peterson's, a Nelnet company. Used under license. All rights reserved.
-