| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 4.15 |
| Score | 0% | 83% |
A coordinate grid is composed of which of the following?
y-axis |
|
all of these |
|
origin |
|
x-axis |
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.
What is 2a + 5a?
| 10a | |
| 7a | |
| -3a2 | |
| a2 |
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.
2a + 5a = 7a
What is 7a - 8a?
| 56a | |
| -1a | |
| -a2 | |
| a2 |
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 - 8a = -1a
Simplify 4a x 3b.
| 7ab | |
| 12ab | |
| 12\( \frac{a}{b} \) | |
| 12\( \frac{b}{a} \) |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
4a x 3b = (4 x 3) (a x b) = 12ab
The dimensions of this cube are height (h) = 9, length (l) = 5, and width (w) = 7. What is the volume?
| 315 | |
| 144 | |
| 100 | |
| 72 |
The volume of a cube is height x length x width:
v = h x l x w
v = 9 x 5 x 7
v = 315