| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.92 |
| Score | 0% | 58% |
A cylinder with a radius (r) and a height (h) has a surface area of:
π r2h |
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2(π r2) + 2π rh |
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4π r2 |
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π r2h2 |
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.
A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
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equal length |
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right angle |
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equal angle |
A trapezoid is a quadrilateral with one set of parallel sides.
Solve 9c - 7c = -5c - 8z - 4 for c in terms of z.
| -\(\frac{1}{14}\)z - \(\frac{2}{7}\) | |
| \(\frac{2}{5}\)z - \(\frac{4}{5}\) | |
| -\(\frac{5}{6}\)z - 1\(\frac{1}{2}\) | |
| -\(\frac{2}{17}\)z - \(\frac{5}{17}\) |
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 - 7z = -5c - 8z - 4
9c = -5c - 8z - 4 + 7z
9c + 5c = -8z - 4 + 7z
14c = -z - 4
c = \( \frac{-z - 4}{14} \)
c = \( \frac{-z}{14} \) + \( \frac{-4}{14} \)
c = -\(\frac{1}{14}\)z - \(\frac{2}{7}\)
If a = -3 and z = 8, what is the value of 9a(a - z)?
| 36 | |
| -10 | |
| 297 | |
| 6 |
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.)
9a(a - z)
9(-3)(-3 - 8)
9(-3)(-11)
(-27)(-11)
297
The formula for volume of a cube in terms of height (h), length (l), and width (w) is which of the following?
h x l x w |
|
lw x wh + lh |
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h2 x l2 x w2 |
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2lw x 2wh + 2lh |
A cube is a rectangular solid box with a height (h), length (l), and width (w). The volume is h x l x w and the surface area is 2lw x 2wh + 2lh.