| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.91 |
| Score | 0% | 58% |
If the base of this triangle is 2 and the height is 7, what is the area?
| 45 | |
| 45\(\frac{1}{2}\) | |
| 50 | |
| 7 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 2 x 7 = \( \frac{14}{2} \) = 7
Simplify (y - 9)(y + 1)
| y2 + 10y + 9 | |
| y2 - 10y + 9 | |
| y2 - 8y - 9 | |
| y2 + 8y - 9 |
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 - 9)(y + 1)
(y x y) + (y x 1) + (-9 x y) + (-9 x 1)
y2 + y - 9y - 9
y2 - 8y - 9
Order the following types of angle from least number of degrees to most number of degrees.
right, acute, obtuse |
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right, obtuse, acute |
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acute, right, obtuse |
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acute, obtuse, right |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
The dimensions of this cylinder are height (h) = 1 and radius (r) = 3. What is the surface area?
| 110π | |
| 24π | |
| 96π | |
| 40π |
The surface area of a cylinder is 2πr2 + 2πrh:
sa = 2πr2 + 2πrh
sa = 2π(32) + 2π(3 x 1)
sa = 2π(9) + 2π(3)
sa = (2 x 9)π + (2 x 3)π
sa = 18π + 6π
sa = 24π
If the length of AB equals the length of BD, point B __________ this line segment.
bisects |
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trisects |
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intersects |
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midpoints |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.