| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.29 |
| Score | 0% | 66% |
If a = 6, b = 4, c = 2, and d = 3, what is the perimeter of this quadrilateral?
| 21 | |
| 20 | |
| 24 | |
| 15 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 6 + 4 + 2 + 3
p = 15
The dimensions of this cylinder are height (h) = 5 and radius (r) = 3. What is the volume?
| 18π | |
| 12π | |
| 512π | |
| 45π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(32 x 5)
v = 45π
The endpoints of this line segment are at (-2, -1) and (2, 1). What is the slope of this line?
| 2 | |
| \(\frac{1}{2}\) | |
| 2\(\frac{1}{2}\) | |
| -\(\frac{1}{2}\) |
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, -1) and (2, 1) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(1.0) - (-1.0)}{(2) - (-2)} \) = \( \frac{2}{4} \)On this circle, line segment CD is the:
diameter |
|
radius |
|
circumference |
|
chord |
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 9b.
| 12ab | |
| 27ab | |
| 27a2b2 | |
| 27\( \frac{a}{b} \) |
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 9b = (3 x 9) (a x b) = 27ab