| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.24 |
| Score | 0% | 65% |
Solve for a:
-5a + 9 = 6 - 2a
| -\(\frac{2}{7}\) | |
| 1\(\frac{2}{5}\) | |
| 1 | |
| -2\(\frac{2}{3}\) |
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 equal sign and the answer on the other.
-5a + 9 = 6 - 2a
-5a = 6 - 2a - 9
-5a + 2a = 6 - 9
-3a = -3
a = \( \frac{-3}{-3} \)
a = 1
If BD = 9 and AD = 19, AB = ?
| 5 | |
| 2 | |
| 10 | |
| 9 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDIf the base of this triangle is 2 and the height is 1, what is the area?
| 54 | |
| 52\(\frac{1}{2}\) | |
| 20 | |
| 1 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 2 x 1 = \( \frac{2}{2} \) = 1
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Inside |
|
First |
|
Last |
|
Odd |
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.
Solve for b:
8b + 6 = \( \frac{b}{-3} \)
| -\(\frac{35}{62}\) | |
| -\(\frac{18}{25}\) | |
| -4\(\frac{4}{17}\) | |
| -\(\frac{20}{21}\) |
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.
8b + 6 = \( \frac{b}{-3} \)
-3 x (8b + 6) = b
(-3 x 8b) + (-3 x 6) = b
-24b - 18 = b
-24b - 18 - b = 0
-24b - b = 18
-25b = 18
b = \( \frac{18}{-25} \)
b = -\(\frac{18}{25}\)