Need to know how to solve quadratic inequalities? From Ramanujan to calculus cocreator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn a system for solving basic linear inequalities.
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How To: Remember "greater than" & "less than" symbols

How To: Find a number given Its percent

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find the Percent Given Two Numbers

How To: Find a missing side of a triangle, similar to another

How To: Convert between diameter and radius

How To: Find a central angle

How To: Translate a shape

How To: Figure out the domain & range of a piecewise function

How To: Find the Radius of a Circle from Arc Length

How To: Find the Slope Given 2 Ordered Pairs

How To: Evaluate logarithms using a calculator TI83

How To: Draw a dotted/solid line when graphing an inequality

How To: Round a decimal number to the nearest tenth in basic arithmetic

How To: Calculate Faster Than a Calculator

How To: Convert Fahrenheit to Celsius with a formula

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)

How To: Divide small numbers by big numbers

How To: Find the equation of a circle given: center & tangent

How To: Find the area of a parallelogram using geometry
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