| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
A coordinate grid is composed of which of the following?
origin |
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x-axis |
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y-axis |
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all of these |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
Simplify (y + 2)(y - 1)
| y2 - 3y + 2 | |
| y2 + 3y + 2 | |
| y2 - y - 2 | |
| y2 + y - 2 |
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 - 1)
(y x y) + (y x -1) + (2 x y) + (2 x -1)
y2 - y + 2y - 2
y2 + y - 2
The dimensions of this cylinder are height (h) = 4 and radius (r) = 7. What is the volume?
| 128π | |
| 196π | |
| 32π | |
| 98π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(72 x 4)
v = 196π
The endpoints of this line segment are at (-2, -1) and (2, 3). What is the slope of this line?
| -2 | |
| 3 | |
| 1 | |
| \(\frac{1}{2}\) |
The slope of this line is the change in y divided by the change in x. The endpoints of this line segment are at (-2, -1) and (2, 3) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(3.0) - (-1.0)}{(2) - (-2)} \) = \( \frac{4}{4} \)A trapezoid is a quadrilateral with one set of __________ sides.
equal length |
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equal angle |
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parallel |
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right angle |
A trapezoid is a quadrilateral with one set of parallel sides.