| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.39 |
| Score | 0% | 68% |
A(n) __________ is to a parallelogram as a square is to a rectangle.
trapezoid |
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rhombus |
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quadrilateral |
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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 math operations is incorrect?
you can subtract monomials that have the same variable and the same exponent |
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you can multiply monomials that have different variables and different exponents |
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all of these statements are correct |
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you can add monomials that have the same variable and the same exponent |
You can only add or subtract monomials that have the same variable and the same exponent. For example, 2a + 4a = 6a and 4a2 - a2 = 3a2 but 2a + 4b and 7a - 3b cannot be combined. However, you can multiply and divide monomials with unlike terms. For example, 2a x 6b = 12ab.
If a = 1, b = 2, c = 2, and d = 2, what is the perimeter of this quadrilateral?
| 12 | |
| 15 | |
| 7 | |
| 21 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 1 + 2 + 2 + 2
p = 7
The dimensions of this cube are height (h) = 6, length (l) = 7, and width (w) = 6. What is the surface area?
| 168 | |
| 202 | |
| 120 | |
| 240 |
The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):
sa = 2lw + 2wh + 2lh
sa = (2 x 7 x 6) + (2 x 6 x 6) + (2 x 7 x 6)
sa = (84) + (72) + (84)
sa = 240
Breaking apart a quadratic expression into a pair of binomials is called:
squaring |
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normalizing |
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deconstructing |
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factoring |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.