| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.49 |
| Score | 0% | 70% |
Breaking apart a quadratic expression into a pair of binomials is called:
factoring |
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squaring |
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normalizing |
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deconstructing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
Order the following types of angle from least number of degrees to most number of degrees.
acute, obtuse, right |
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acute, right, obtuse |
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right, obtuse, acute |
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right, acute, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
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.
Solve for c:
c2 - 2c - 48 = 0
| 3 or -2 | |
| -1 or -7 | |
| -6 or 8 | |
| 8 or 1 |
The first step to solve a quadratic equation that's set to zero is to factor the quadratic equation:
c2 - 2c - 48 = 0
(c + 6)(c - 8) = 0
For this expression to be true, the left side of the expression must equal zero. Therefore, either (c + 6) or (c - 8) must equal zero:
If (c + 6) = 0, c must equal -6
If (c - 8) = 0, c must equal 8
So the solution is that c = -6 or 8
If angle a = 52° and angle b = 25° what is the length of angle d?
| 151° | |
| 146° | |
| 128° | |
| 130° |
An exterior angle of a triangle is equal to the sum of the two interior angles that are opposite:
d° = b° + c°
To find angle c, remember that the sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 52° - 25° = 103°
So, d° = 25° + 103° = 128°
A shortcut to get this answer is to remember that angles around a line add up to 180°:
a° + d° = 180°
d° = 180° - a°
d° = 180° - 52° = 128°