| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
A cylinder with a radius (r) and a height (h) has a surface area of:
2(π r2) + 2π rh |
|
π r2h |
|
π r2h2 |
|
4π r2 |
A cylinder is a solid figure with straight parallel sides and a circular or oval cross section with a radius (r) and a height (h). The volume of a cylinder is π r2h and the surface area is 2(π r2) + 2π rh.
Breaking apart a quadratic expression into a pair of binomials is called:
factoring |
|
normalizing |
|
squaring |
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deconstructing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
If side x = 7cm, side y = 13cm, and side z = 5cm what is the perimeter of this triangle?
| 25cm | |
| 33cm | |
| 37cm | |
| 22cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 7cm + 13cm + 5cm = 25cm
If a = 4, b = 2, c = 8, and d = 3, what is the perimeter of this quadrilateral?
| 15 | |
| 17 | |
| 18 | |
| 21 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 4 + 2 + 8 + 3
p = 17
Solve 9c - c = 8c + 7x + 4 for c in terms of x.
| -2\(\frac{1}{5}\)x + \(\frac{1}{5}\) | |
| 1\(\frac{2}{7}\)x + \(\frac{6}{7}\) | |
| 8x + 4 | |
| -9x - 1 |
To solve this equation, isolate the variable for which you are solving (c) on one side of the equation and put everything else on the other side.
9c - x = 8c + 7x + 4
9c = 8c + 7x + 4 + x
9c - 8c = 7x + 4 + x
c = 8x + 4