| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.35 |
| Score | 0% | 67% |
If the base of this triangle is 4 and the height is 4, what is the area?
| 60\(\frac{1}{2}\) | |
| 60 | |
| 8 | |
| 65 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 4 x 4 = \( \frac{16}{2} \) = 8
Simplify (5a)(2ab) - (7a2)(2b).
| 63ab2 | |
| -4a2b | |
| 24a2b | |
| 4ab2 |
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.
(5a)(2ab) - (7a2)(2b)
(5 x 2)(a x a x b) - (7 x 2)(a2 x b)
(10)(a1+1 x b) - (14)(a2b)
10a2b - 14a2b
-4a2b
If a = 4, b = 3, c = 1, and d = 5, what is the perimeter of this quadrilateral?
| 14 | |
| 8 | |
| 13 | |
| 23 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 4 + 3 + 1 + 5
p = 13
Which of the following statements about a parallelogram is not true?
the area of a parallelogram is base x height |
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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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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).
Order the following types of angle from least number of degrees to most number of degrees.
right, obtuse, acute |
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acute, obtuse, right |
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acute, right, obtuse |
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right, acute, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.