| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.69 |
| Score | 0% | 74% |
What is 2a5 - 3a5?
| -1 | |
| -a10 | |
| 5 | |
| -1a5 |
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.
2a5 - 3a5 = -1a5
If a = c = 3, b = d = 6, and the blue angle = 67°, what is the area of this parallelogram?
| 14 | |
| 5 | |
| 12 | |
| 18 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 3 x 6
a = 18
What is 9a + 3a?
| 12a | |
| 12a2 | |
| 12 | |
| 6a2 |
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.
9a + 3a = 12a
The dimensions of this cube are height (h) = 9, length (l) = 6, and width (w) = 7. What is the volume?
| 98 | |
| 378 | |
| 9 | |
| 54 |
The volume of a cube is height x length x width:
v = h x l x w
v = 9 x 6 x 7
v = 378
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
h2 x l2 x w2 |
|
h x l x w |
|
2lw x 2wh + 2lh |
|
lw x wh + lh |
A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.