| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.64 |
| Score | 0% | 73% |
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
supplementary, vertical |
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acute, obtuse |
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obtuse, acute |
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vertical, supplementary |
Angles around a line add up to 180°. Angles around a point add up to 360°. When two lines intersect, adjacent angles are supplementary (they add up to 180°) and angles across from either other are vertical (they're equal).
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
h x l x w |
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lw x wh + lh |
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h2 x l2 x w2 |
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2lw x 2wh + 2lh |
A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.
If a = 7, b = 1, c = 9, and d = 8, what is the perimeter of this quadrilateral?
| 22 | |
| 20 | |
| 25 | |
| 24 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 7 + 1 + 9 + 8
p = 25
Simplify (3a)(2ab) + (6a2)(5b).
| 36ab2 | |
| 55ab2 | |
| 24ab2 | |
| 36a2b |
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.
(3a)(2ab) + (6a2)(5b)
(3 x 2)(a x a x b) + (6 x 5)(a2 x b)
(6)(a1+1 x b) + (30)(a2b)
6a2b + 30a2b
36a2b
Which of the following expressions contains exactly two terms?
binomial |
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polynomial |
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monomial |
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quadratic |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.