| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.55 |
| Score | 0% | 71% |
Breaking apart a quadratic expression into a pair of binomials is called:
factoring |
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deconstructing |
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squaring |
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normalizing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
Simplify 4a x 5b.
| 20\( \frac{b}{a} \) | |
| 9ab | |
| 20ab | |
| 20\( \frac{a}{b} \) |
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 x 5b = (4 x 5) (a x b) = 20ab
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
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equal length |
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equal angle |
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parallel |
A trapezoid is a quadrilateral with one set of parallel sides.
Solve for b:
b2 - 13b + 42 = 0
| 6 or 7 | |
| 4 or -6 | |
| -7 or -8 | |
| -5 or -8 |
The first step to solve a quadratic equation that's set to zero is to factor the quadratic equation:
b2 - 13b + 42 = 0
(b - 6)(b - 7) = 0
For this expression to be true, the left side of the expression must equal zero. Therefore, either (b - 6) or (b - 7) must equal zero:
If (b - 6) = 0, b must equal 6
If (b - 7) = 0, b must equal 7
So the solution is that b = 6 or 7
If a = c = 1, b = d = 9, and the blue angle = 68°, what is the area of this parallelogram?
| 20 | |
| 40 | |
| 9 | |
| 35 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 1 x 9
a = 9