| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.26 |
| Score | 0% | 65% |
Solve for c:
-4c + 3 = 5 + 6c
| -2 | |
| 3 | |
| -\(\frac{1}{5}\) | |
| 1\(\frac{2}{3}\) |
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 equal sign and the answer on the other.
-4c + 3 = 5 + 6c
-4c = 5 + 6c - 3
-4c - 6c = 5 - 3
-10c = 2
c = \( \frac{2}{-10} \)
c = -\(\frac{1}{5}\)
The formula for the area of a circle is which of the following?
a = π d |
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a = π r2 |
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a = π d2 |
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a = π r |
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.
A trapezoid is a quadrilateral with one set of __________ sides.
equal angle |
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equal length |
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parallel |
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right angle |
A trapezoid is a quadrilateral with one set of parallel sides.
Breaking apart a quadratic expression into a pair of binomials is called:
normalizing |
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deconstructing |
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squaring |
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factoring |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
Solve for z:
z + 4 = \( \frac{z}{-9} \)
| -4 | |
| -\(\frac{8}{9}\) | |
| 1\(\frac{1}{6}\) | |
| -3\(\frac{3}{5}\) |
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 equal sign and the answer on the other.
z + 4 = \( \frac{z}{-9} \)
-9 x (z + 4) = z
(-9 x z) + (-9 x 4) = z
-9z - 36 = z
-9z - 36 - z = 0
-9z - z = 36
-10z = 36
z = \( \frac{36}{-10} \)
z = -3\(\frac{3}{5}\)