| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.47 |
| Score | 0% | 69% |
Solve for c:
6c - 9 = 7 + c
| 3\(\frac{1}{5}\) | |
| 1\(\frac{1}{6}\) | |
| 1 | |
| 1\(\frac{1}{8}\) |
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.
6c - 9 = 7 + c
6c = 7 + c + 9
6c - c = 7 + 9
5c = 16
c = \( \frac{16}{5} \)
c = 3\(\frac{1}{5}\)
Which of the following statements about a parallelogram is not true?
the perimeter of a parallelogram is the sum of the lengths of all sides |
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a parallelogram is a quadrilateral |
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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).
A right angle measures:
90° |
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180° |
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45° |
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360° |
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.
What is the circumference of a circle with a diameter of 5?
| 24π | |
| 5π | |
| 9π | |
| 34π |
The formula for circumference is circle diameter x π:
c = πd
c = 5π
If a = c = 3, b = d = 4, what is the area of this rectangle?
| 12 | |
| 6 | |
| 2 | |
| 1 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 3 x 4
a = 12