| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.44 |
| Score | 0% | 69% |
If the base of this triangle is 4 and the height is 7, what is the area?
| 21 | |
| 14 | |
| 35 | |
| 60 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 4 x 7 = \( \frac{28}{2} \) = 14
The dimensions of this cube are height (h) = 9, length (l) = 1, and width (w) = 1. What is the surface area?
| 40 | |
| 38 | |
| 232 | |
| 66 |
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 1 x 1) + (2 x 1 x 9) + (2 x 1 x 9)
sa = (2) + (18) + (18)
sa = 38
What is 5a5 - 3a5?
| 2a5 | |
| 8 | |
| 15a5 | |
| 15a10 |
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.
5a5 - 3a5 = 2a5
What is 9a8 + 2a8?
| 7a16 | |
| 11a16 | |
| 11a8 | |
| 11 |
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.
9a8 + 2a8 = 11a8
Which of the following expressions contains exactly two terms?
quadratic |
|
polynomial |
|
binomial |
|
monomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.