Evaluate Equations
2x = 16
x = 8
16 + x = 42
x = 26
Exponent
the number that tells you how many times to multiple the base number
Describe the steps to divide 1/4 by 2/3
Rewrite using same multiply flip then multiply the fractions straight across. Simply if needed
s - 17 = 182
x = 199
1/3n = 15
n = 45
Variable
Letter or symbol that stands for a number
Marco spends a total of d dollars on postage to mail party invitations to each of his g guests. Which is the dependent and which in the Independent variable?
Dependent: d
Independent: g
3.5x = 14.7
x = 4.2
40 = 2/11 x d
d= 220
Algebraic Expression
Mathematical expression that includes at least 1 variable.
Simplify the expression:
13x + 17 -11x
2x + 7
x/7 = 0
x = 0
3/4g = 5/8
g = 5/6
Coefficient
Number that is multiplied by a variable
ex: 2x + 8
6 x (2v - 3)
Solve the equation if v = 5
42
Write a division equation that has the solution x = 16
ex: x/2 = 8
Aaron wants to buy a bicycle that costs $128. So far, he has saved $56. The equation a + 56 = 128 can be used to find the amount a in dollars that Aaron still needs to save. What is the solution to the equation?
a = 72
Numerical Expression
Mathmatical phrase that only uses numbers and operation symbols
ex: 4 x (8 + 5)
The three sides of a triangle measure 3x + 6 inches, 5x inches, and 6x inches. Write an expression for the perimeter of the triangle in inches. Then simplify the expression.
3x + 6 + 5x +6x ; 14x +6