| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
If a = c = 8, b = d = 3, what is the area of this rectangle?
| 14 | |
| 24 | |
| 16 | |
| 6 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 8 x 3
a = 24
Breaking apart a quadratic expression into a pair of binomials is called:
squaring |
|
normalizing |
|
deconstructing |
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factoring |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
The dimensions of this cube are height (h) = 7, length (l) = 2, and width (w) = 4. What is the surface area?
| 174 | |
| 100 | |
| 232 | |
| 168 |
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 2 x 4) + (2 x 4 x 7) + (2 x 2 x 7)
sa = (16) + (56) + (28)
sa = 100
Simplify (4a)(9ab) + (5a2)(2b).
| 46ab2 | |
| 26a2b | |
| 46a2b | |
| -26ab2 |
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.
(4a)(9ab) + (5a2)(2b)
(4 x 9)(a x a x b) + (5 x 2)(a2 x b)
(36)(a1+1 x b) + (10)(a2b)
36a2b + 10a2b
46a2b
If the length of AB equals the length of BD, point B __________ this line segment.
bisects |
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midpoints |
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trisects |
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intersects |
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.