| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.62 |
| Score | 0% | 72% |
Solve for a:
-6a + 2 = 9 - 8a
| -1 | |
| -1\(\frac{1}{3}\) | |
| -1\(\frac{1}{7}\) | |
| 3\(\frac{1}{2}\) |
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 equal sign and the answer on the other.
-6a + 2 = 9 - 8a
-6a = 9 - 8a - 2
-6a + 8a = 9 - 2
2a = 7
a = \( \frac{7}{2} \)
a = 3\(\frac{1}{2}\)
A quadrilateral is a shape with __________ sides.
2 |
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3 |
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4 |
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5 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
The endpoints of this line segment are at (-2, 6) and (2, -4). What is the slope of this line?
| -2\(\frac{1}{2}\) | |
| 2\(\frac{1}{2}\) | |
| -1 | |
| -3 |
The slope of this line is the change in y divided by the change in x. The endpoints of this line segment are at (-2, 6) and (2, -4) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-4.0) - (6.0)}{(2) - (-2)} \) = \( \frac{-10}{4} \)Which of the following is not a part of PEMDAS, the acronym for math order of operations?
exponents |
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addition |
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pairs |
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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.)
If a = c = 8, b = d = 6, what is the area of this rectangle?
| 18 | |
| 48 | |
| 9 | |
| 6 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 8 x 6
a = 48