| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.46 |
| Score | 0% | 69% |
A right angle measures:
45° |
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360° |
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180° |
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90° |
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 dimensions of this cube are height (h) = 3, length (l) = 1, and width (w) = 3. What is the volume?
| 9 | |
| 56 | |
| 63 | |
| 4 |
The volume of a cube is height x length x width:
v = h x l x w
v = 3 x 1 x 3
v = 9
A quadrilateral is a shape with __________ sides.
5 |
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2 |
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3 |
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4 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
Which of the following statements about a parallelogram is not true?
a parallelogram is a quadrilateral |
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the perimeter of a parallelogram is the sum of the lengths of all sides |
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the area of a parallelogram is base x height |
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opposite sides and adjacent angles are equal |
A parallelogram is a quadrilateral with two sets of parallel sides. Opposite sides (a = c, b = d) and angles (red = red, blue = blue) are equal. The area of a parallelogram is base x height and the perimeter is the sum of the lengths of all sides (a + b + c + d).
Solve -2c + 7c = -3c + 7x + 9 for c in terms of x.
| x + 9 | |
| 1\(\frac{2}{7}\)x + 1 | |
| 2\(\frac{2}{5}\)x + 1\(\frac{2}{5}\) | |
| -1\(\frac{1}{2}\)x - 1\(\frac{1}{6}\) |
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.
-2c + 7x = -3c + 7x + 9
-2c = -3c + 7x + 9 - 7x
-2c + 3c = 7x + 9 - 7x
c = + 9