| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
Solve for a:
-2a + 3 < \( \frac{a}{-8} \)
| a < -1\(\frac{3}{4}\) | |
| a < 1\(\frac{3}{5}\) | |
| a < \(\frac{6}{17}\) | |
| a < \(\frac{16}{17}\) |
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 + 3 < \( \frac{a}{-8} \)
-8 x (-2a + 3) < a
(-8 x -2a) + (-8 x 3) < a
16a - 24 < a
16a - 24 - a < 0
16a - a < 24
15a < 24
a < \( \frac{24}{15} \)
a < 1\(\frac{3}{5}\)
A quadrilateral is a shape with __________ sides.
4 |
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5 |
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2 |
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3 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
A right angle measures:
360° |
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90° |
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45° |
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180° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
The endpoints of this line segment are at (-2, -2) and (2, 0). What is the slope of this line?
| \(\frac{1}{2}\) | |
| -3 | |
| -\(\frac{1}{2}\) | |
| -2\(\frac{1}{2}\) |
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, -2) and (2, 0) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(0.0) - (-2.0)}{(2) - (-2)} \) = \( \frac{2}{4} \)The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
2lw x 2wh + 2lh |
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lw x wh + lh |
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h x l x w |
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h2 x l2 x w2 |
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.