| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.48 |
| Score | 0% | 70% |
What is 2a - 3a?
| -a2 | |
| -1a | |
| 5 | |
| 6a2 |
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.
2a - 3a = -1a
The dimensions of this cube are height (h) = 3, length (l) = 3, and width (w) = 9. What is the volume?
| 504 | |
| 81 | |
| 210 | |
| 18 |
The volume of a cube is height x length x width:
v = h x l x w
v = 3 x 3 x 9
v = 81
Which of the following expressions contains exactly two terms?
binomial |
|
polynomial |
|
monomial |
|
quadratic |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
Solve for c:
-c - 6 = -3 + 7c
| -\(\frac{2}{3}\) | |
| -\(\frac{3}{4}\) | |
| -\(\frac{3}{8}\) | |
| 1\(\frac{3}{4}\) |
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 equal sign and the answer on the other.
-c - 6 = -3 + 7c
-c = -3 + 7c + 6
-c - 7c = -3 + 6
-8c = 3
c = \( \frac{3}{-8} \)
c = -\(\frac{3}{8}\)
Solve for x:
-5x + 2 > \( \frac{x}{-2} \)
| x > \(\frac{4}{9}\) | |
| x > 3\(\frac{9}{13}\) | |
| x > -\(\frac{32}{41}\) | |
| x > 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 > sign and the answer on the other.
-5x + 2 > \( \frac{x}{-2} \)
-2 x (-5x + 2) > x
(-2 x -5x) + (-2 x 2) > x
10x - 4 > x
10x - 4 - x > 0
10x - x > 4
9x > 4
x > \( \frac{4}{9} \)
x > \(\frac{4}{9}\)