| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.40 |
| Score | 0% | 68% |
A trapezoid is a quadrilateral with one set of __________ sides.
equal length |
|
equal angle |
|
parallel |
|
right angle |
A trapezoid is a quadrilateral with one set of parallel sides.
What is 2a8 + 2a8?
| 4a16 | |
| 4a8 | |
| 4 | |
| a816 |
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.
2a8 + 2a8 = 4a8
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
2lw x 2wh + 2lh |
|
h x l x w |
|
lw x wh + lh |
|
h2 x l2 x w2 |
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.
If a = c = 8, b = d = 4, what is the area of this rectangle?
| 42 | |
| 32 | |
| 7 | |
| 36 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 8 x 4
a = 32
Solve for c:
4c + 8 = \( \frac{c}{6} \)
| -\(\frac{64}{65}\) | |
| -2\(\frac{7}{19}\) | |
| -\(\frac{6}{13}\) | |
| -2\(\frac{2}{23}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.
4c + 8 = \( \frac{c}{6} \)
6 x (4c + 8) = c
(6 x 4c) + (6 x 8) = c
24c + 48 = c
24c + 48 - c = 0
24c - c = -48
23c = -48
c = \( \frac{-48}{23} \)
c = -2\(\frac{2}{23}\)