| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.29 |
| Score | 0% | 66% |
The dimensions of this trapezoid are a = 6, b = 8, c = 9, d = 4, and h = 5. What is the area?
| 22\(\frac{1}{2}\) | |
| 30 | |
| 35 | |
| 17\(\frac{1}{2}\) |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(8 + 4)(5)
a = ½(12)(5)
a = ½(60) = \( \frac{60}{2} \)
a = 30
Which of the following expressions contains exactly two terms?
monomial |
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binomial |
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polynomial |
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quadratic |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
Simplify (y + 2)(y + 4)
| y2 + 2y - 8 | |
| y2 - 2y - 8 | |
| y2 + 6y + 8 | |
| y2 - 6y + 8 |
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 + 4)
(y x y) + (y x 4) + (2 x y) + (2 x 4)
y2 + 4y + 2y + 8
y2 + 6y + 8
A(n) __________ is to a parallelogram as a square is to a rectangle.
triangle |
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rhombus |
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trapezoid |
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quadrilateral |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
The dimensions of this cube are height (h) = 1, length (l) = 6, and width (w) = 8. What is the volume?
| 48 | |
| 60 | |
| 504 | |
| 189 |
The volume of a cube is height x length x width:
v = h x l x w
v = 1 x 6 x 8
v = 48