| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.64 |
| Score | 0% | 73% |
If a = 2, b = 3, c = 9, and d = 4, what is the perimeter of this quadrilateral?
| 23 | |
| 18 | |
| 24 | |
| 13 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 2 + 3 + 9 + 4
p = 18
The endpoints of this line segment are at (-2, 5) and (2, 3). What is the slope of this line?
| -1 | |
| -\(\frac{1}{2}\) | |
| -2 | |
| -2\(\frac{1}{2}\) |
The slope of this line is the change in y divided by the change in x. The endpoints of this line segment are at (-2, 5) and (2, 3) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(3.0) - (5.0)}{(2) - (-2)} \) = \( \frac{-2}{4} \)To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Last |
|
Odd |
|
Inside |
|
First |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses.
What is 3a5 - 9a5?
| -6a5 | |
| a510 | |
| 27a10 | |
| -6a10 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
3a5 - 9a5 = -6a5
Breaking apart a quadratic expression into a pair of binomials is called:
factoring |
|
squaring |
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normalizing |
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deconstructing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.