| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.68 |
| Score | 0% | 74% |
What is 7a + 7a?
| 0 | |
| a2 | |
| 14a | |
| 14 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
7a + 7a = 14a
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
division |
|
pairs |
|
exponents |
|
addition |
When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Which types of triangles will always have at least two sides of equal length?
equilateral and isosceles |
|
equilateral and right |
|
equilateral, isosceles and right |
|
isosceles and right |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.
If b = 7 and y = -9, what is the value of 8b(b - y)?
| 896 | |
| 112 | |
| -200 | |
| 216 |
To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
8b(b - y)
8(7)(7 + 9)
8(7)(16)
(56)(16)
896
Breaking apart a quadratic expression into a pair of binomials is called:
deconstructing |
|
squaring |
|
factoring |
|
normalizing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.