| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.12 |
| Score | 0% | 62% |
The endpoints of this line segment are at (-2, -3) and (2, 1). What is the slope of this line?
| 2\(\frac{1}{2}\) | |
| -1 | |
| 1\(\frac{1}{2}\) | |
| 1 |
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, -3) and (2, 1) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(1.0) - (-3.0)}{(2) - (-2)} \) = \( \frac{4}{4} \)The dimensions of this cube are height (h) = 2, length (l) = 9, and width (w) = 6. What is the volume?
| 432 | |
| 108 | |
| 40 | |
| 4 |
The volume of a cube is height x length x width:
v = h x l x w
v = 2 x 9 x 6
v = 108
The dimensions of this cube are height (h) = 9, length (l) = 9, and width (w) = 3. What is the surface area?
| 52 | |
| 246 | |
| 270 | |
| 126 |
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 9 x 3) + (2 x 3 x 9) + (2 x 9 x 9)
sa = (54) + (54) + (162)
sa = 270
On this circle, a line segment connecting point A to point D is called:
diameter |
|
chord |
|
radius |
|
circumference |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
Simplify 3a x 5b.
| 15a2b2 | |
| 15\( \frac{b}{a} \) | |
| 15\( \frac{a}{b} \) | |
| 15ab |
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.
3a x 5b = (3 x 5) (a x b) = 15ab