Central Tendency
Which measure of central tendency represents the middle value?
A. Mean
B. Mode
C. Median
D. Range
C. Median
Is 5x-2 a polynomial?
No, it has a negative exponent.
What is the simplified form of (a + b)2?
a2 + 2ab + b2
What is a rational algebraic expression?
A. An expression containing only whole numbers
B. An expression involving square roots of variables
C. A ratio of two polynomials
D. A sum of constants and variables
C. A ratio of two polynomials
What is the common difference in an arithmetic sequence?
A. The ratio between two consecutive terms
B. The number of terms in the sequence
C. The fixed amount added to each term to get the next
D. The average of the first and last terms
C. The fixed amount added to each term to get the next
What measure of Central Tendency is represents the value where the data tend to luster together
Mean
What happens when you add two polynomials?
A. Only the coefficients are multiplied
B. The degrees of the polynomials are added
C. Like terms are combined by adding their coefficients
D. The terms are subtracted directly
C.
What does the expression (x+5)(x−5)represent?
Difference of two squares
Why must you check for common factors before simplifying a rational expression?
A. To make the expression longer
B. To convert it into a decimal
C. To eliminate terms and reduce the expression to its simplest form
D. To change the variable
C. To eliminate terms and reduce the expression to its simplest form
Which of the following sequences is an arithmetic sequence?
A. 3, 6, 12, 24
B. 2, 5, 8, 11
C. 1, 4, 9, 16
D. 5, 10, 20, 40
B. 2, 5, 8, 11
Find the mean of the following numbers: 7, 5, 3, 8, 7.
6
Simplify: (x2 + 5x + 6)/(x + 3)
x + 2
Factor the expression: x2 + 6x + 9
(x + 3) (x + 3)
Simplify (x2 - 9)/(x2 - x - 6)
x+3 / x + 2
Find the 10th term of the arithmetic sequence: 4, 7, 10, 13, ...
31
Given the data set: 4, 8, 8, 6, 5, 10,
What is the middle value?
7
Which expression is the correct result of multiplying (x+2)(x−3)?
x2 - x - 6
Which of the following expressions is not factorable using special products?
A. x2 + 6x + 9
B. x3 - 8
C. x2 + 25
D. 4x2 - 9
x2 + 25
Simplify x2 - 1 / x + 1
x - 1
Given that the 5th term of an arithmetic sequence is 18 and the 10th term is 33, what is the common difference?
3
A teacher wants to summarize the performance of a class where most students scored the same mark, but a few scored very high or very low. Which measure should the teacher use and why?
A. Mean, because it includes all values
B. Mode, because it shows the most common score
C. Median, because it eliminates the effect of outliers
D. Range, because it shows the spread
Median, because it eliminates the effect of outliers
(x + 2) (x - 2) = x2 - 4x - 4
Is the answer corret?
No, the answer should be a binomial.
Find the right factor of x2 - 10x + 25
(x - 5) (x - 5)
A student simplified x2 +4x + 4 / x + 2 as x2 + 2. Is he correct?
No, it has to be x + 2
A student claims the 20th term of the sequence 10, 15, 20, 25, ... is 115. Is the student correct?
No, the correct 20th term is 105