| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.64 |
| Score | 0% | 73% |
Simplify (y + 7)(y + 4)
| y2 + 11y + 28 | |
| y2 - 3y - 28 | |
| y2 - 11y + 28 | |
| y2 + 3y - 28 |
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:
(y + 7)(y + 4)
(y x y) + (y x 4) + (7 x y) + (7 x 4)
y2 + 4y + 7y + 28
y2 + 11y + 28
If a = c = 7, b = d = 4, what is the area of this rectangle?
| 35 | |
| 7 | |
| 5 | |
| 28 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 7 x 4
a = 28
Which of the following is not a part of PEMDAS, the acronym for math order of operations?
division |
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exponents |
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addition |
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pairs |
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.)
What is 6a8 + 4a8?
| 10a8 | |
| 24a8 | |
| 2 | |
| a816 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
6a8 + 4a8 = 10a8
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
acute, obtuse |
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vertical, supplementary |
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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).