| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.80 |
| Score | 0% | 76% |
Which of the following expressions contains exactly two terms?
quadratic |
|
monomial |
|
binomial |
|
polynomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
Simplify 4a x 5b.
| 20a2b2 | |
| 20\( \frac{b}{a} \) | |
| 20ab | |
| 9ab |
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.
4a x 5b = (4 x 5) (a x b) = 20ab
The dimensions of this cube are height (h) = 6, length (l) = 4, and width (w) = 4. What is the surface area?
| 64 | |
| 38 | |
| 128 | |
| 190 |
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 4 x 4) + (2 x 4 x 6) + (2 x 4 x 6)
sa = (32) + (48) + (48)
sa = 128
The dimensions of this cube are height (h) = 7, length (l) = 1, and width (w) = 4. What is the volume?
| 28 | |
| 504 | |
| 14 | |
| 72 |
The volume of a cube is height x length x width:
v = h x l x w
v = 7 x 1 x 4
v = 28
If a = c = 8, b = d = 7, what is the area of this rectangle?
| 30 | |
| 48 | |
| 8 | |
| 56 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 8 x 7
a = 56