| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.09 |
| Score | 0% | 62% |
Solve for a:
8a + 3 = 2 - 8a
| -\(\frac{4}{9}\) | |
| -\(\frac{1}{16}\) | |
| -1\(\frac{2}{3}\) | |
| -4\(\frac{1}{2}\) |
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.
8a + 3 = 2 - 8a
8a = 2 - 8a - 3
8a + 8a = 2 - 3
16a = -1
a = \( \frac{-1}{16} \)
a = -\(\frac{1}{16}\)
Which of the following expressions contains exactly two terms?
quadratic |
|
monomial |
|
polynomial |
|
binomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
What is the circumference of a circle with a diameter of 1?
| 11π | |
| 36π | |
| 24π | |
| 1π |
The formula for circumference is circle diameter x π:
c = πd
c = 1π
The endpoints of this line segment are at (-2, -7) and (2, -1). What is the slope of this line?
| \(\frac{1}{2}\) | |
| -1\(\frac{1}{2}\) | |
| 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, -7) and (2, -1) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-1.0) - (-7.0)}{(2) - (-2)} \) = \( \frac{6}{4} \)The dimensions of this cylinder are height (h) = 3 and radius (r) = 4. What is the surface area?
| 56π | |
| 144π | |
| 110π | |
| 198π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(42) + 2π(4 x 3)
sa = 2π(16) + 2π(12)
sa = (2 x 16)π + (2 x 12)π
sa = 32π + 24π
sa = 56π