Elementary Algebra Review Part 5

Elementary Algebra Review Part 5
  • Currently 4.0/5 Stars.
1737 views, 1 rating - 00:10:18
Part of video series Elementary Algebra Review
Taught by YourMathGal
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Evaluating variable expressions using given values, writing and solving Geometry equations given a situation, finding examples and counterexamples of statements

  • How do you evaluate variable expressions with given values of variables?
  • How do you evaluate x - y + z when x = 2, y = -3, and z = -4?
  • How do you evaluate z - x^3 when x = 2 and z = -4?
  • How do you evaluate (x - y)/(z + 2) when x = 2, y = -3, and z = -4?
  • How do you evaluate (x^2 - z)/(z - 3x) when x = 2, y = -3, and z = -4?
  • If x = 56 degrees, and x and y are complementary angles, how do you find angle y?
  • If x = 56 degrees, and x and y are supplementary angles, how do you find angle y?
  • Is p + n always positive if p is positive and n is negative?
  • Is p - n always positive if p is positive and n is negative?
  • Is n - p always positive if p is positive and n is negative?
  • How do you know if adding and subtracting positive and negative numbers will always result in a positive number?
This lesson does more with plugging values into variable expressions and evaluating them using order of operations. Every step is explained very clearly again. A couple of examples are done finding angle measures from words as well as determining whether adding and subtracting positive and negative numbers will always result in a positive number.
  • Currently 4.0/5 Stars.
Reviewed by MathVids Staff on October 29, 2009.
 
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