Number Systems
What is a rational number?
A number that either terminates or repeats
What does the expression 3x+4 equal when x=2
10
2^3?
8
Convert 0.00045 to Scientific Notation.
4.5x10^-4
Solve for x. 2x+3=11
x=4
Give an example of an irrational number.
sqrt(2)
Simplify the expression 5(2x-3)
10x-15
10^-2
1/100
What is 3.2 x 10^5, in standard form?
320,000
Solve for x. 4x-7=5
x=3
How do you add two rational numbers?
2/3+3/4
1 5/12
What is the distributive property?
Yes
What is the value?
3^0
Write 5.6 x 10^-3 in standard form.
0.0056
Solve for x.
3(x-2)=9
x=5
What is the difference between rational and irrational numbers?
Repeating and terminating/ Non-repeating
Explain how to solve 2(x+3)=10?
2 would be distributed into the parentheses
Then subtract 6 from both sides
Then divide by 2
x=2
What is 4^-1?
How do you multiply numbers in scientific notation?
Multiply the decimal, Add the exponents
Solve for x.
7x+4=25
x=3
How do you convert a decimal to a fraction?
divide the denominator by the numerator
What is the formula for finding the area of a rectangle?
Length x Width= Area
(-2)^3
-1/8
What is the result of 2x10^3 / 4x10^2
5
Solve for x.
5(x+1)-2=3
x=0