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 how to work with and solve rate problems in algebra using the distance formula.
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How To: Remember "greater than" & "less than" symbols

How To: Calculate Faster Than a Calculator

How To: Derive the equation of a straight line

How To: Evaluate square roots

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

How To: Find the Percent Given Two Numbers

How To: Solve for the missing ratios or proportions

How To: Find the equation of a line given 1 point

How To: Do long division without a calculator

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

How To: Find and sketch the domain of a multivariable function

How To: Factor a trinomial with negative leading coefficient

How To: Find the Slope Given 2 Ordered Pairs

How To: Find the slope from a set of points

How To: Learn Calculus in 20 minutes

How To: Find the area of a triangle when given 2 sides & angle

How To: Find the area of a circle when you know the diameter

Find the discriminant (DELTA): quadratic equation

How To: Subtract a mixed number from a proper fraction in basic math

How To: Solve direct proportions
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