| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.93 |
| Score | 0% | 59% |
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Inside |
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Odd |
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Last |
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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.
If side x = 11cm, side y = 6cm, and side z = 15cm what is the perimeter of this triangle?
| 32cm | |
| 23cm | |
| 38cm | |
| 31cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 11cm + 6cm + 15cm = 32cm
Solve 7b + 7b = 6b - 5z - 8 for b in terms of z.
| -8z - 4 | |
| -12z - 8 | |
| z + 1\(\frac{1}{2}\) | |
| -\(\frac{1}{2}\)z + \(\frac{1}{5}\) |
To solve this equation, isolate the variable for which you are solving (b) on one side of the equation and put everything else on the other side.
7b + 7z = 6b - 5z - 8
7b = 6b - 5z - 8 - 7z
7b - 6b = -5z - 8 - 7z
b = -12z - 8
Solve for b:
-5b + 6 = \( \frac{b}{-2} \)
| 1\(\frac{1}{3}\) | |
| -\(\frac{6}{19}\) | |
| 1\(\frac{1}{11}\) | |
| -3\(\frac{13}{17}\) |
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 equal sign and the answer on the other.
-5b + 6 = \( \frac{b}{-2} \)
-2 x (-5b + 6) = b
(-2 x -5b) + (-2 x 6) = b
10b - 12 = b
10b - 12 - b = 0
10b - b = 12
9b = 12
b = \( \frac{12}{9} \)
b = 1\(\frac{1}{3}\)
The endpoints of this line segment are at (-2, 2) and (2, -10). What is the slope of this line?
| -3 | |
| \(\frac{1}{2}\) | |
| -1\(\frac{1}{2}\) | |
| 1 |
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, 2) and (2, -10) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-10.0) - (2.0)}{(2) - (-2)} \) = \( \frac{-12}{4} \)