| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.07 |
| Score | 0% | 61% |
Order the following types of angle from least number of degrees to most number of degrees.
right, acute, obtuse |
|
right, obtuse, acute |
|
acute, obtuse, right |
|
acute, right, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
Which of the following is not required to define the slope-intercept equation for a line?
\({\Delta y \over \Delta x}\) |
|
x-intercept |
|
slope |
|
y-intercept |
A line on the coordinate grid can be defined by a slope-intercept equation: y = mx + b. For a given value of x, the value of y can be determined given the slope (m) and y-intercept (b) of the line. The slope of a line is change in y over change in x, \({\Delta y \over \Delta x}\), and the y-intercept is the y-coordinate where the line crosses the vertical y-axis.
The dimensions of this cylinder are height (h) = 4 and radius (r) = 6. What is the volume?
| 125π | |
| 7π | |
| 144π | |
| 5π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(62 x 4)
v = 144π
Breaking apart a quadratic expression into a pair of binomials is called:
squaring |
|
normalizing |
|
factoring |
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deconstructing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
The dimensions of this cube are height (h) = 7, length (l) = 9, and width (w) = 9. What is the surface area?
| 414 | |
| 192 | |
| 258 | |
| 56 |
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 9 x 9) + (2 x 9 x 7) + (2 x 9 x 7)
sa = (162) + (126) + (126)
sa = 414