| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.52 |
| Score | 0% | 70% |
What is 5a - 7a?
| 12 | |
| -2 | |
| 35a | |
| -2a |
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.
5a - 7a = -2a
A coordinate grid is composed of which of the following?
all of these |
|
x-axis |
|
y-axis |
|
origin |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
Simplify (y - 5)(y - 3)
| y2 - 8y + 15 | |
| y2 + 2y - 15 | |
| y2 + 8y + 15 | |
| y2 - 2y - 15 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y - 5)(y - 3)
(y x y) + (y x -3) + (-5 x y) + (-5 x -3)
y2 - 3y - 5y + 15
y2 - 8y + 15
Which types of triangles will always have at least two sides of equal length?
equilateral, isosceles and right |
|
equilateral and isosceles |
|
isosceles and right |
|
equilateral 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 a = c = 3, b = d = 9, and the blue angle = 58°, what is the area of this parallelogram?
| 32 | |
| 64 | |
| 27 | |
| 54 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 3 x 9
a = 27