| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.47 |
| Score | 0% | 69% |
A trapezoid is a quadrilateral with one set of __________ sides.
equal angle |
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equal length |
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parallel |
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right angle |
A trapezoid is a quadrilateral with one set of parallel sides.
The dimensions of this cube are height (h) = 9, length (l) = 7, and width (w) = 4. What is the surface area?
| 98 | |
| 254 | |
| 198 | |
| 58 |
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 7 x 4) + (2 x 4 x 9) + (2 x 7 x 9)
sa = (56) + (72) + (126)
sa = 254
Simplify (y - 7)(y - 8)
| y2 - 15y + 56 | |
| y2 + y - 56 | |
| y2 + 15y + 56 | |
| y2 - y - 56 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y - 7)(y - 8)
(y x y) + (y x -8) + (-7 x y) + (-7 x -8)
y2 - 8y - 7y + 56
y2 - 15y + 56
Which of the following expressions contains exactly two terms?
polynomial |
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monomial |
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quadratic |
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binomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
What is 7a5 + 6a5?
| 13a5 | |
| a510 | |
| 42a10 | |
| a10 |
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.
7a5 + 6a5 = 13a5