| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.70 |
| Score | 0% | 74% |
Solve 8c + 5c = 4c + x - 5 for c in terms of x.
| 2x + \(\frac{1}{3}\) | |
| -1\(\frac{1}{3}\)x - 1 | |
| -\(\frac{8}{9}\)x + \(\frac{2}{3}\) | |
| -x - 1\(\frac{1}{4}\) |
To solve this equation, isolate the variable for which you are solving (c) on one side of the equation and put everything else on the other side.
8c + 5x = 4c + x - 5
8c = 4c + x - 5 - 5x
8c - 4c = x - 5 - 5x
4c = -4x - 5
c = \( \frac{-4x - 5}{4} \)
c = \( \frac{-4x}{4} \) + \( \frac{-5}{4} \)
c = -x - 1\(\frac{1}{4}\)
A coordinate grid is composed of which of the following?
y-axis |
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origin |
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x-axis |
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all of these |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
A quadrilateral is a shape with __________ sides.
3 |
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2 |
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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 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.
A right angle measures:
90° |
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45° |
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360° |
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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.