| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
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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exterior angle = sum of two adjacent interior angles |
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sum of interior angles = 180° |
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.
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
vertical, supplementary |
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acute, obtuse |
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obtuse, acute |
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supplementary, vertical |
Angles around a line add up to 180°. Angles around a point add up to 360°. When two lines intersect, adjacent angles are supplementary (they add up to 180°) and angles across from either other are vertical (they're equal).
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
addition |
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pairs |
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exponents |
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division |
When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Find the value of c:
4c + x = -6
3c + 3x = 9
| -2\(\frac{3}{13}\) | |
| -3 | |
| 11 | |
| \(\frac{12}{29}\) |
You need to find the value of c so solve the first equation in terms of x:
4c + x = -6
x = -6 - 4c
then substitute the result (-6 - 4c) into the second equation:
3c + 3(-6 - 4c) = 9
3c + (3 x -6) + (3 x -4c) = 9
3c - 18 - 12c = 9
3c - 12c = 9 + 18
-9c = 27
c = \( \frac{27}{-9} \)
c = -3