Literally!?
Solve for L:
P = 2L + 2W
L = P/2 - W
Find the solution to
7x + 3 = 4x - 15
x = -6
What property is this?
(4+5)+6 = 4+(5+6)
Associative property of addition
How do I know if a number is rational or not?
Rational numbers can be represented as a fraction,
Irrational numbers cannot be represented as a fraction.
Solve for x:
y = mx + b
x = (y - b)/m
9h + 3 = 21
h=2
For associative order stays the same and ( ) move, for commutative order changes!
What buttons do I hit on my calculator to see if a number is a fraction
Math—>ENTER—>ENTER
Solve for r:
C = 2nr
r = c/2n
What is the error in the following problem?
3 + 7(x - 2) = 15
3 + 7x - 2 = 15
7x + 1 = 15
7x = 14
x = 2
Distributed incorrectly. They forgot to multiply the 7 and the -2. It should be 3 + 7x - 14 = 15
What is the property?
3(x+5)=3x+15
distributive property
Rational or Irrational?
-105.23
Rational!
Solve the equation for c:
A = 4b + 4c
c = A/4 - b
Solve the following equation and round to the nearest tenth
6x + 7= 9x-5
x=4
What is the property that gets us from step one to step two?
STEP 1) 7x + 1 = 15
STEP 2) 7x = 14
subtraction property of equality
Rational or Irrational?
\pi
Irrational!
Solve the equation for d:
a = bcd + f
d = (a - f)/bc
Solve the following equation.
6(x - 5) = 12
x = -3
What two properties are shown?
a(b+c)=a(c+b)=ac+ab
commutative property and distributive property
Which is rational?
\sqrt(23) , \sqrt(121) , \sqrt(123)
\sqrt(121) =11