| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.18 |
| Score | 0% | 64% |
The endpoints of this line segment are at (-2, -8) and (2, 2). What is the slope of this line?
| 1\(\frac{1}{2}\) | |
| 1 | |
| 2\(\frac{1}{2}\) | |
| -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, -8) and (2, 2) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(2.0) - (-8.0)}{(2) - (-2)} \) = \( \frac{10}{4} \)A cylinder with a radius (r) and a height (h) has a surface area of:
4π r2 |
|
π r2h |
|
π r2h2 |
|
2(π r2) + 2π rh |
A cylinder is a solid figure with straight parallel sides and a circular or oval cross section with a radius (r) and a height (h). The volume of a cylinder is π r2h and the surface area is 2(π r2) + 2π rh.
What is 8a - 8a?
| 0a | |
| 64a | |
| 64a2 | |
| a2 |
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.
8a - 8a = 0a
A coordinate grid is composed of which of the following?
x-axis |
|
origin |
|
y-axis |
|
all of these |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
Solve for c:
3c - 9 = \( \frac{c}{3} \)
| -2\(\frac{6}{11}\) | |
| -\(\frac{15}{26}\) | |
| \(\frac{16}{27}\) | |
| 3\(\frac{3}{8}\) |
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.
3c - 9 = \( \frac{c}{3} \)
3 x (3c - 9) = c
(3 x 3c) + (3 x -9) = c
9c - 27 = c
9c - 27 - c = 0
9c - c = 27
8c = 27
c = \( \frac{27}{8} \)
c = 3\(\frac{3}{8}\)