Rules
Anything to the Zero Power is. . .
1
To multiply 2x(5x2+7) use the _____ Property
Distributive
What is the greatest square root that goes into 54. . .
9
What is the difference between a sample v. population?
A sample is the portion of the population; A population is all the members of a group of interest
What is the domain of all the quadratic functions we worked with?
All real numbers
The expression x-n=1/xn represents what rule?
Negative Exponent Property
The product of (x+8)(x+8) is called a. . .
Perfect Square Trinomial
True/False: The square root of -16 is -4
False; you cannot take the square root of a negative number
Ms. B referred to this as basically stalking. . .
Observational Study
True/false: (15)2 and -152 = 225
False
(x2-25) is called. . .
Difference of Two Squares
(x-5)(x-5) =
x2-10x+25
True or false: You can add 5(rad 12) + 2(rad 3)
True
True/False: The mean, median, and mode change if you are transforming a data set by adding or subtracting.
True
Why does the graph of y=-5x2+7 open downward?
The coefficient attached to x2 is negative
True or false: Let's say you are trying to factor ax2+bx+c where a is NOT equal to 1.
To start you would put c in the top of your "star" and b in the bottom of your "star".
False, you would put ac in the top of your star
(x-5)(x+5) =
x2-25
True/False: You cannot multiply radicals unless they are like terms
False
What values change when you are trying to transform a data set by multiplying or dividing. . .
Mean, Median, Mode, Range, Standard Deviation
If a die is rolled, what is probability you will roll at least a 1?
6/6 or 100%
This question requires 2 answers. . . When exponents have the same base and you are multiplying them like in y5 x y7 you ______ the exponents. When exponents have the same base and you are dividing them like in g4/g2 you ____ the exponents.
add;subtract
If you cannot factor a polynomial nicely, you can always revert to using the _____________
Quadratic Formula
How do you get rid of a radical in the denominator
Multiply the fraction by the denominator again; multiply by the conjugate
List all the types of Samples. . .
SRS; Convenience; Self-Selected; Stratified; Systematic
If the square root of 4 is 2 and 72=49, when you are solving equations involving radicals and trying to find x you must always __________ _________ ______ to get rid of the radical.
Square both sides