| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.11 |
| Score | 0% | 62% |
The endpoints of this line segment are at (-2, 2) and (2, -8). What is the slope of this line?
| 3 | |
| -2\(\frac{1}{2}\) | |
| 1 | |
| \(\frac{1}{2}\) |
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, 2) and (2, -8) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-8.0) - (2.0)}{(2) - (-2)} \) = \( \frac{-10}{4} \)Simplify (6a)(5ab) + (4a2)(4b).
| 46a2b | |
| 14a2b | |
| -14a2b | |
| 46ab2 |
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.
(6a)(5ab) + (4a2)(4b)
(6 x 5)(a x a x b) + (4 x 4)(a2 x b)
(30)(a1+1 x b) + (16)(a2b)
30a2b + 16a2b
46a2b
A trapezoid is a quadrilateral with one set of __________ sides.
equal angle |
|
equal length |
|
parallel |
|
right angle |
A trapezoid is a quadrilateral with one set of parallel sides.
The dimensions of this cube are height (h) = 7, length (l) = 5, and width (w) = 4. What is the surface area?
| 126 | |
| 348 | |
| 136 | |
| 166 |
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 7) + (2 x 5 x 7)
sa = (40) + (56) + (70)
sa = 166
If a = c = 6, b = d = 3, what is the area of this rectangle?
| 32 | |
| 42 | |
| 18 | |
| 8 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 6 x 3
a = 18