| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.25 |
| Score | 0% | 65% |
If the length of AB equals the length of BD, point B __________ this line segment.
midpoints |
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intersects |
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bisects |
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trisects |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.
If a = 9 and x = -3, what is the value of -7a(a - x)?
| -18 | |
| -280 | |
| -756 | |
| -168 |
To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
-7a(a - x)
-7(9)(9 + 3)
-7(9)(12)
(-63)(12)
-756
Which of the following expressions contains exactly two terms?
quadratic |
|
binomial |
|
polynomial |
|
monomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
If angle a = 48° and angle b = 28° what is the length of angle c?
| 79° | |
| 69° | |
| 113° | |
| 104° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 48° - 28° = 104°
Simplify (6a)(8ab) - (8a2)(9b).
| 238ab2 | |
| 238a2b | |
| 24ab2 | |
| -24a2b |
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.
(6a)(8ab) - (8a2)(9b)
(6 x 8)(a x a x b) - (8 x 9)(a2 x b)
(48)(a1+1 x b) - (72)(a2b)
48a2b - 72a2b
-24a2b