| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.17 |
| Score | 0% | 63% |
Which of the following expressions contains exactly two terms?
monomial |
|
binomial |
|
quadratic |
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polynomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
Solve for y:
y2 + 2y - 35 = 0
| 5 or -7 | |
| 4 or -3 | |
| 7 or -9 | |
| -5 or -8 |
The first step to solve a quadratic equation that's set to zero is to factor the quadratic equation:
y2 + 2y - 35 = 0
(y - 5)(y + 7) = 0
For this expression to be true, the left side of the expression must equal zero. Therefore, either (y - 5) or (y + 7) must equal zero:
If (y - 5) = 0, y must equal 5
If (y + 7) = 0, y must equal -7
So the solution is that y = 5 or -7
Solve for b:
8b - 3 = \( \frac{b}{-8} \)
| -1\(\frac{1}{3}\) | |
| 3\(\frac{1}{3}\) | |
| 5 | |
| \(\frac{24}{65}\) |
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.
8b - 3 = \( \frac{b}{-8} \)
-8 x (8b - 3) = b
(-8 x 8b) + (-8 x -3) = b
-64b + 24 = b
-64b + 24 - b = 0
-64b - b = -24
-65b = -24
b = \( \frac{-24}{-65} \)
b = \(\frac{24}{65}\)
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 |
|
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.
If BD = 21 and AD = 28, AB = ?
| 7 | |
| 17 | |
| 3 | |
| 10 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BD