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2-Precalculus:Homework:1.1:Notes
2-Precalculus:Homework:1.1:Notes
17
Mathematics
Undergraduate 1
01/14/2016

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Term
How do you multiply fractions?
Definition
1.) Multiply the numerator of the first fraction by the numerator of the second fraction.
2.)Multiply the denominator of the first fraction by the denominator of the second fraction.
3.)Simplify the product fraction.
Term
How do you add/subtract fractions?
Definition
1.)Make the denominators of the first and second fractions the same.
2.)Add/Subtract the numerators but keep the denominators the same.
Term
How do you find the perimeter of something?
Definition
Add the measurement of each side together.
Term
What is the Area Formula?
Definition
Length Times Width
Term
What is the Perimeter Formula?
Definition
Perimeter Equals Two Times Length Plus Two Times Width
Term
Area is measured in what kind of units?
Definition
Units squared
Term
Is perimeter measured in units squared?
Definition
No, it is measured in single units.
Term
How do you determine if a number is a solution to an equation?
Definition
1.) Take the number and plug it in for "x".
2.) If the resulting statement is true then the number is the solution of the equation, if not then the number is not the solution of the equation.
Term
The domain cannot have a value that would cause the denominator to equal what number?
Definition
Zero
Term
How do you find the domain of a variable in an equation?
Definition
The domain is all real numbers excluding any numbers that would make the denominator equal zero.
Term
When writing in interval notation infinity is always enclosed by what symbol?
Definition
A parenthesis
Term
Brackets in interval notation denote that a number is what in a domain?
Definition
Included
Term
Parenthesis in interval notation denote that a number is what in a domain?
Definition
Not included
Term
Brackets are used in interval notation when a number is what?
Definition
Included, greater/less than or equal to
Term
Parenthesis are used in interval notation when a number is what?
Definition
Not Included, greater than or less than
Term
What is the formula for the circumference of a circle?
Definition
Circumference=2*(pi*r)
Term
If you have the circumference of a circle how do you find the radius?
Definition
Circumference/(2*pi)=Radius
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