Algebra
What is a variable
a symbol (usually a letter) standing in for an unknown numerical value in an equation
Define the following
Disjoint Sets
Intersecting Sets
Disjoint Sets- two sets that have no common elements.
Intersecting Sets: sets that share at least one common element.
What are the different types of Fractions?
Improper Fractions
Proper Fractions
Mixed Fraction
Simplify:
x + x + x + x =
a + a + a + a + a =
4x
5a
A = {1, 2, 3} and B = {5, 7, 9}.
C = {1, 2, 3, 4, 5} and D = {1, 3, 9, 12}
So what is
A ∪ B =
C ∪ D =
a. {1, 2, 3, 5, 7, 9}
b.{1, 2, 3, 4, 5, 9, 12}
2/5 + 10/20
9/10
The number that multiplies a variable is called the
Coefficent
How many elements are there in Set H?
H = {4, 8, 12, 16, 20, 24, 28, 32, 36, 40}
Set H has 10 elements
What is 10/34 + 24/34 in lowest terms
1/1 or 1
1. Substitute these values into each expression; a = 5, b = 2
a. a + b = 5 + 2 =
b. a – b = 5 – 2 =
c. 2a + 3b =
7
3
2(5) + 3(2)
= 10 + 6
= 16
What was the Venn diagrams original name and who was it named after
It was first called Eulerian Circles after Leonard Euler, a Swiss Mathematician.
5/25 + 7/25 + 2/5 as a percent
68%
Given that a = 2, b = 3, c = 5 and d = 10, evaluate:
1. a + b = 2 + 3
=
2. a + b + c = 2 + 3 + 5
=
3. d – c = 10 – 5
=
5
10
5
Describe what the completement of a set is
All the elements that are not in the given set. The symbol for Complement is Bc or B|
5/25 + 10/30 + 2/10 as a decimal
0.44