| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.99 |
| Score | 0% | 60% |
The dimensions of this cube are height (h) = 2, length (l) = 5, and width (w) = 4. What is the surface area?
| 76 | |
| 110 | |
| 46 | |
| 306 |
The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):
sa = 2lw + 2wh + 2lh
sa = (2 x 5 x 4) + (2 x 4 x 2) + (2 x 5 x 2)
sa = (40) + (16) + (20)
sa = 76
Breaking apart a quadratic expression into a pair of binomials is called:
squaring |
|
normalizing |
|
factoring |
|
deconstructing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
If the base of this triangle is 2 and the height is 5, what is the area?
| 60 | |
| 5 | |
| 49 | |
| 45\(\frac{1}{2}\) |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 2 x 5 = \( \frac{10}{2} \) = 5
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
|
equal angle |
|
equal length |
|
parallel |
A trapezoid is a quadrilateral with one set of parallel sides.
The endpoints of this line segment are at (-2, 0) and (2, -2). What is the slope of this line?
| -\(\frac{1}{2}\) | |
| 2\(\frac{1}{2}\) | |
| -3 | |
| -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, 0) and (2, -2) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-2.0) - (0.0)}{(2) - (-2)} \) = \( \frac{-2}{4} \)