| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.72 |
| Score | 0% | 74% |
Simplify (y - 2)(y - 3)
| y2 - y - 6 | |
| y2 + 5y + 6 | |
| y2 + y - 6 | |
| y2 - 5y + 6 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y - 2)(y - 3)
(y x y) + (y x -3) + (-2 x y) + (-2 x -3)
y2 - 3y - 2y + 6
y2 - 5y + 6
If a = c = 5, b = d = 2, and the blue angle = 72°, what is the area of this parallelogram?
| 10 | |
| 14 | |
| 42 | |
| 8 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 5 x 2
a = 10
A quadrilateral is a shape with __________ sides.
4 |
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3 |
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2 |
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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.
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.
Which of the following is not true about both rectangles and squares?
the perimeter is the sum of the lengths of all four sides |
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the area is length x width |
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all interior angles are right angles |
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the lengths of all sides are equal |
A rectangle is a parallelogram containing four right angles. Opposite sides (a = c, b = d) are equal and the perimeter is the sum of the lengths of all sides (a + b + c + d) or, comonly, 2 x length x width. The area of a rectangle is length x width. A square is a rectangle with four equal length sides. The perimeter of a square is 4 x length of one side (4s) and the area is the length of one side squared (s2).