| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
Simplify 2a x 2b.
| 4a2b2 | |
| 4ab | |
| 4\( \frac{b}{a} \) | |
| 4\( \frac{a}{b} \) |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
2a x 2b = (2 x 2) (a x b) = 4ab
A(n) __________ is to a parallelogram as a square is to a rectangle.
trapezoid |
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quadrilateral |
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rhombus |
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triangle |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
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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the area of a parallelogram is base x height |
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opposite sides and adjacent angles are equal |
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a parallelogram is a quadrilateral |
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).
If a = c = 6, b = d = 3, and the blue angle = 70°, what is the area of this parallelogram?
| 28 | |
| 18 | |
| 6 | |
| 9 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 6 x 3
a = 18
If side x = 15cm, side y = 6cm, and side z = 5cm what is the perimeter of this triangle?
| 40cm | |
| 31cm | |
| 27cm | |
| 26cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 15cm + 6cm + 5cm = 26cm