| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.02 |
| Score | 0% | 60% |
Solve for y:
-4y - 4 = -5 + 8y
| -1\(\frac{2}{5}\) | |
| \(\frac{1}{6}\) | |
| -\(\frac{7}{8}\) | |
| \(\frac{1}{12}\) |
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.
-4y - 4 = -5 + 8y
-4y = -5 + 8y + 4
-4y - 8y = -5 + 4
-12y = -1
y = \( \frac{-1}{-12} \)
y = \(\frac{1}{12}\)
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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π r2h2 |
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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.
Solve 2c + 3c = -4c + 2y - 3 for c in terms of y.
| -2\(\frac{1}{5}\)y + 1\(\frac{4}{5}\) | |
| \(\frac{1}{3}\)y - \(\frac{7}{12}\) | |
| -\(\frac{1}{6}\)y - \(\frac{1}{2}\) | |
| \(\frac{3}{11}\)y + \(\frac{6}{11}\) |
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.
2c + 3y = -4c + 2y - 3
2c = -4c + 2y - 3 - 3y
2c + 4c = 2y - 3 - 3y
6c = -y - 3
c = \( \frac{-y - 3}{6} \)
c = \( \frac{-y}{6} \) + \( \frac{-3}{6} \)
c = -\(\frac{1}{6}\)y - \(\frac{1}{2}\)
A quadrilateral is a shape with __________ sides.
2 |
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5 |
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4 |
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3 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
Simplify (y + 7)(y - 8)
| y2 + y - 56 | |
| y2 + 15y + 56 | |
| y2 - 15y + 56 | |
| y2 - y - 56 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y + 7)(y - 8)
(y x y) + (y x -8) + (7 x y) + (7 x -8)
y2 - 8y + 7y - 56
y2 - y - 56