How to simplify rational expressions to higher powers. We will focus on simplifying a rational expression to the 3rd and 4th power. I make short, to-the-point online math tutorials. I struggled with ...

A number is divisible by 9 if the sum of its digits is greater than or equal to 9. 621 (6+2+1=9), for instance, is divisible by 9. Simply move the decimal point one place to the left to find the 10% ...

Sometimes the easiest, simplest way to liven up a party, sleepover, family gathering or presentation to a class is to perform a magic trick. Most magic tricks require fancy costumes and props, but ...

Unlock the secrets of school life with our collection of clever hacks and hilarious moments! From blackboard drawing tricks ...

Imagine you're a trader. You're on the trading floor, trying to price out if a 15-year bond issued by General Electric will generate the returns needed to placate your investors. Bad news, your ...