| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.11 |
| Score | 0% | 62% |
If AD = 16 and BD = 11, AB = ?
| 15 | |
| 5 | |
| 13 | |
| 2 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BD
The endpoints of this line segment are at (-2, 2) and (2, 0). What is the slope of this line?
| -2\(\frac{1}{2}\) | |
| 1\(\frac{1}{2}\) | |
| -\(\frac{1}{2}\) | |
| -3 |
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, 2) and (2, 0) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(0.0) - (2.0)}{(2) - (-2)} \) = \( \frac{-2}{4} \)Which of the following statements about a triangle is not true?
exterior angle = sum of two adjacent interior angles |
|
area = ½bh |
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perimeter = sum of side lengths |
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sum of interior angles = 180° |
A triangle is a three-sided polygon. It has three interior angles that add up to 180° (a + b + c = 180°). An exterior angle of a triangle is equal to the sum of the two interior angles that are opposite (d = b + c). The perimeter of a triangle is equal to the sum of the lengths of its three sides, the height of a triangle is equal to the length from the base to the opposite vertex (angle) and the area equals one-half triangle base x height: a = ½ base x height.
If b = -1 and y = -3, what is the value of 5b(b - y)?
| 4 | |
| 42 | |
| -324 | |
| -10 |
To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
5b(b - y)
5(-1)(-1 + 3)
5(-1)(2)
(-5)(2)
-10
The dimensions of this cylinder are height (h) = 6 and radius (r) = 2. What is the volume?
| 128π | |
| 25π | |
| 24π | |
| 567π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(22 x 6)
v = 24π