| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.14 |
| Score | 0% | 63% |
Solve for a:
-2a + 8 < \( \frac{a}{-6} \)
| a < -4\(\frac{4}{9}\) | |
| a < \(\frac{12}{19}\) | |
| a < -\(\frac{2}{3}\) | |
| a < 4\(\frac{4}{11}\) |
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.
-2a + 8 < \( \frac{a}{-6} \)
-6 x (-2a + 8) < a
(-6 x -2a) + (-6 x 8) < a
12a - 48 < a
12a - 48 - a < 0
12a - a < 48
11a < 48
a < \( \frac{48}{11} \)
a < 4\(\frac{4}{11}\)
Breaking apart a quadratic expression into a pair of binomials is called:
normalizing |
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factoring |
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squaring |
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deconstructing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
lw x wh + lh |
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2lw x 2wh + 2lh |
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h2 x l2 x w2 |
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h x l x w |
A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.
What is 5a - 6a?
| 11 | |
| 30a2 | |
| -1a | |
| -a2 |
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.
5a - 6a = -1a
On this circle, line segment CD is the:
circumference |
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diameter |
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chord |
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radius |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).