| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.35 |
| Score | 0% | 67% |
If angle a = 68° and angle b = 29° what is the length of angle c?
| 96° | |
| 104° | |
| 94° | |
| 83° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 68° - 29° = 83°
Solve for x:
-x + 5 > \( \frac{x}{-3} \)
| x > 7\(\frac{1}{2}\) | |
| x > 1\(\frac{4}{23}\) | |
| x > \(\frac{36}{53}\) | |
| x > -\(\frac{16}{17}\) |
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 > sign and the answer on the other.
-x + 5 > \( \frac{x}{-3} \)
-3 x (-x + 5) > x
(-3 x -x) + (-3 x 5) > x
3x - 15 > x
3x - 15 - x > 0
3x - x > 15
2x > 15
x > \( \frac{15}{2} \)
x > 7\(\frac{1}{2}\)
Breaking apart a quadratic expression into a pair of binomials is called:
normalizing |
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factoring |
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deconstructing |
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squaring |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Last |
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Odd |
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Inside |
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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.
Which of the following statements about a triangle is not true?
area = ½bh |
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perimeter = sum of side lengths |
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sum of interior angles = 180° |
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exterior angle = sum of two adjacent interior angles |
A triangle is a three-sided polygon. It has three interior angles that add up to 180° (a + b + c = 180°). An exterior angle of a triangle is equal to the sum of the two interior angles that are opposite (d = b + c). The perimeter of a triangle is equal to the sum of the lengths of its three sides, the height of a triangle is equal to the length from the base to the opposite vertex (angle) and the area equals one-half triangle base x height: a = ½ base x height.