| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
What is 3a3 - 2a3?
| 5a6 | |
| a36 | |
| 5 | |
| 1a3 |
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.
3a3 - 2a3 = 1a3
The endpoints of this line segment are at (-2, -8) and (2, 2). What is the slope of this line?
| -2 | |
| 2\(\frac{1}{2}\) | |
| 1\(\frac{1}{2}\) | |
| \(\frac{1}{2}\) |
The slope of this line is the change in y divided by the change in x. The endpoints of this line segment are at (-2, -8) and (2, 2) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(2.0) - (-8.0)}{(2) - (-2)} \) = \( \frac{10}{4} \)What is 4a3 + 4a3?
| 8a3 | |
| 6 | |
| 16a3 | |
| 8a6 |
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.
4a3 + 4a3 = 8a3
The dimensions of this cube are height (h) = 4, length (l) = 6, and width (w) = 3. What is the volume?
| 75 | |
| 270 | |
| 112 | |
| 72 |
The volume of a cube is height x length x width:
v = h x l x w
v = 4 x 6 x 3
v = 72
If c = 5 and x = 1, what is the value of -6c(c - x)?
| 0 | |
| -120 | |
| -96 | |
| -315 |
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.)
-6c(c - x)
-6(5)(5 - 1)
-6(5)(4)
(-30)(4)
-120