| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.22 |
| Score | 0% | 64% |
The endpoints of this line segment are at (-2, 2) and (2, 0). What is the slope of this line?
| \(\frac{1}{2}\) | |
| 3 | |
| -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, 2) and (2, 0) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(0.0) - (2.0)}{(2) - (-2)} \) = \( \frac{-2}{4} \)Simplify (6a)(5ab) + (7a2)(5b).
| -5ab2 | |
| 5a2b | |
| 65a2b | |
| 65ab2 |
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) + (7a2)(5b)
(6 x 5)(a x a x b) + (7 x 5)(a2 x b)
(30)(a1+1 x b) + (35)(a2b)
30a2b + 35a2b
65a2b
The dimensions of this cylinder are height (h) = 2 and radius (r) = 9. What is the volume?
| 20π | |
| 32π | |
| 64π | |
| 162π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(92 x 2)
v = 162π
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 |
|
h2 x l2 x w2 |
|
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.
If side x = 8cm, side y = 6cm, and side z = 12cm what is the perimeter of this triangle?
| 30cm | |
| 37cm | |
| 26cm | |
| 34cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 8cm + 6cm + 12cm = 26cm