| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.59 |
| Score | 0% | 72% |
Solve for c:
8c - 8 > -3 - 9c
| c > \(\frac{7}{9}\) | |
| c > -\(\frac{2}{5}\) | |
| c > \(\frac{5}{17}\) | |
| c > -1\(\frac{2}{5}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the > sign and the answer on the other.
8c - 8 > -3 - 9c
8c > -3 - 9c + 8
8c + 9c > -3 + 8
17c > 5
c > \( \frac{5}{17} \)
c > \(\frac{5}{17}\)
The formula for the area of a circle is which of the following?
a = π r |
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a = π r2 |
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a = π d |
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a = π d2 |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
If a = 2, b = 1, c = 6, and d = 6, what is the perimeter of this quadrilateral?
| 13 | |
| 18 | |
| 24 | |
| 15 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 2 + 1 + 6 + 6
p = 15
The dimensions of this cylinder are height (h) = 3 and radius (r) = 8. What is the volume?
| 192π | |
| 150π | |
| 128π | |
| 243π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(82 x 3)
v = 192π
A(n) __________ is two expressions separated by an equal sign.
problem |
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equation |
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expression |
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formula |
An equation is two expressions separated by an equal sign. The key to solving equations is to repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.