| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.21 |
| Score | 0% | 64% |
Which of the following expressions contains exactly two terms?
binomial |
|
monomial |
|
quadratic |
|
polynomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
The endpoints of this line segment are at (-2, 3) and (2, -9). What is the slope of this line?
| 2 | |
| \(\frac{1}{2}\) | |
| 1 | |
| -3 |
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, -9) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-9.0) - (3.0)}{(2) - (-2)} \) = \( \frac{-12}{4} \)What is the circumference of a circle with a radius of 1?
| 32π | |
| 2π | |
| 24π | |
| 19π |
The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:
c = πd
c = π(2 * r)
c = π(2 * 1)
c = 2π
Solve for y:
-3y - 9 > 3 - 4y
| y > 6 | |
| y > -\(\frac{4}{9}\) | |
| y > 12 | |
| y > \(\frac{1}{4}\) |
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 > sign and the answer on the other.
-3y - 9 > 3 - 4y
-3y > 3 - 4y + 9
-3y + 4y > 3 + 9
y > 12
The dimensions of this cylinder are height (h) = 3 and radius (r) = 4. What is the volume?
| 48π | |
| 162π | |
| 576π | |
| 36π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(42 x 3)
v = 48π