| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
Which of the following statements about math operations is incorrect?
you can subtract monomials that have the same variable and the same exponent |
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you can add monomials that have the same variable and the same exponent |
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you can multiply monomials that have different variables and different exponents |
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all of these statements are correct |
You can only add or subtract monomials that have the same variable and the same exponent. For example, 2a + 4a = 6a and 4a2 - a2 = 3a2 but 2a + 4b and 7a - 3b cannot be combined. However, you can multiply and divide monomials with unlike terms. For example, 2a x 6b = 12ab.
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
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equal angle |
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equal length |
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parallel |
A trapezoid is a quadrilateral with one set of parallel sides.
Solve for x:
2x + 1 > \( \frac{x}{-5} \)
| x > 2 | |
| x > \(\frac{1}{4}\) | |
| x > \(\frac{12}{13}\) | |
| x > -\(\frac{5}{11}\) |
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.
2x + 1 > \( \frac{x}{-5} \)
-5 x (2x + 1) > x
(-5 x 2x) + (-5 x 1) > x
-10x - 5 > x
-10x - 5 - x > 0
-10x - x > 5
-11x > 5
x > \( \frac{5}{-11} \)
x > -\(\frac{5}{11}\)
Breaking apart a quadratic expression into a pair of binomials is called:
factoring |
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squaring |
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normalizing |
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deconstructing |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
Solve for a:
-a + 3 < 4 - 2a
| a < -\(\frac{1}{4}\) | |
| a < \(\frac{3}{7}\) | |
| a < \(\frac{1}{7}\) | |
| a < 1 |
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.
-a + 3 < 4 - 2a
-a < 4 - 2a - 3
-a + 2a < 4 - 3
a < 1