| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.10 |
| Score | 0% | 62% |
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Odd |
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First |
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Inside |
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Last |
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.
If a = c = 6, b = d = 2, and the blue angle = 71°, what is the area of this parallelogram?
| 8 | |
| 42 | |
| 12 | |
| 54 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 6 x 2
a = 12
The dimensions of this trapezoid are a = 5, b = 6, c = 8, d = 2, and h = 4. What is the area?
| 22 | |
| 16 | |
| 40 | |
| 19\(\frac{1}{2}\) |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(6 + 2)(4)
a = ½(8)(4)
a = ½(32) = \( \frac{32}{2} \)
a = 16
Solve for a:
-5a - 5 > -7 - 6a
| a > -2 | |
| a > 3\(\frac{1}{2}\) | |
| a > 2 | |
| a > 1\(\frac{1}{3}\) |
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.
-5a - 5 > -7 - 6a
-5a > -7 - 6a + 5
-5a + 6a > -7 + 5
a > -2
Factor y2 - 3y - 10
| (y + 5)(y - 2) | |
| (y + 5)(y + 2) | |
| (y - 5)(y - 2) | |
| (y - 5)(y + 2) |
To factor a quadratic expression, apply the FOIL method (First, Outside, Inside, Last) in reverse. First, find the two Last terms that will multiply to produce -10 as well and sum (Inside, Outside) to equal -3. For this problem, those two numbers are -5 and 2. Then, plug these into a set of binomials using the square root of the First variable (y2):
y2 - 3y - 10
y2 + (-5 + 2)y + (-5 x 2)
(y - 5)(y + 2)