| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.09 |
| Score | 0% | 62% |
Which of the following expressions contains exactly two terms?
monomial |
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quadratic |
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binomial |
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polynomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
Simplify 3a x 9b.
| 12ab | |
| 27ab | |
| 27\( \frac{a}{b} \) | |
| 27a2b2 |
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 x 9b = (3 x 9) (a x b) = 27ab
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).
Solve for c:
8c + 1 < 2 + 7c
| c < -1\(\frac{2}{3}\) | |
| c < 1 | |
| c < \(\frac{1}{2}\) | |
| c < \(\frac{1}{8}\) |
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.
8c + 1 < 2 + 7c
8c < 2 + 7c - 1
8c - 7c < 2 - 1
c < 1
The formula for the area of a circle is which of the following?
c = π d |
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c = π r2 |
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c = π r |
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c = π d2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.