Posts by JDM Educational Staff

Radical equations appear in math when we take square roots, cube roots, or higher roots of expressions with variables.  Solving these equations is not enough – we also need to verify the solutions...

Radicals come up often in algebra, geometry, calculus, and other subjects in math.  Converting between radicals and rational exponents is helpful in simplifying expressions and solving...

There are lots of graphs that are not functions.  These relations fail the vertical line test, meaning that there is some ambiguity in the output for a given input. So, what cannot be a...

When you start a new job or get a raise, it helps to know what the new annual pay will be.  The way to find it will depend on how you are paid (hourly, daily, weekly, biweekly, or...

Density is an important concept in physics and chemistry.  It helps us to compare two substances to see which gas will rise higher, or which solids will sink or float in a liquid. So, what...

Expected value is a statistical concept that helps us to figure out the value of a variable in the “average” case.  Expected value tells us what to expect, which gives it many applications...