| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
Solve 5b - 3b = -b - 5x - 9 for b in terms of x.
| -9x + 9 | |
| \(\frac{1}{8}\)x + \(\frac{1}{8}\) | |
| -\(\frac{1}{3}\)x - 1\(\frac{1}{2}\) | |
| -\(\frac{5}{8}\)x - \(\frac{7}{8}\) |
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.
5b - 3x = -b - 5x - 9
5b = -b - 5x - 9 + 3x
5b + b = -5x - 9 + 3x
6b = -2x - 9
b = \( \frac{-2x - 9}{6} \)
b = \( \frac{-2x}{6} \) + \( \frac{-9}{6} \)
b = -\(\frac{1}{3}\)x - 1\(\frac{1}{2}\)
Which of the following expressions contains exactly two terms?
monomial |
|
quadratic |
|
polynomial |
|
binomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
If BD = 19 and AD = 27, AB = ?
| 2 | |
| 11 | |
| 8 | |
| 18 |
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 9 and the height is 4, what is the area?
| 60 | |
| 45\(\frac{1}{2}\) | |
| 18 | |
| 55 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 9 x 4 = \( \frac{36}{2} \) = 18
A right angle measures:
45° |
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90° |
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180° |
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360° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.