| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.51 |
| Score | 0% | 70% |
A trapezoid is a quadrilateral with one set of __________ sides.
right angle |
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parallel |
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equal length |
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equal angle |
A trapezoid is a quadrilateral with one set of parallel sides.
If side x = 8cm, side y = 6cm, and side z = 5cm what is the perimeter of this triangle?
| 25cm | |
| 19cm | |
| 26cm | |
| 28cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 8cm + 6cm + 5cm = 19cm
Breaking apart a quadratic expression into a pair of binomials is called:
deconstructing |
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factoring |
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normalizing |
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squaring |
To factor a quadratic expression, apply the FOIL (First, Outside, Inside, Last) method in reverse.
Solve for x:
3x + 1 > \( \frac{x}{-1} \)
| x > 1\(\frac{2}{3}\) | |
| x > -1\(\frac{17}{39}\) | |
| x > 1\(\frac{1}{2}\) | |
| x > -\(\frac{1}{4}\) |
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.
3x + 1 > \( \frac{x}{-1} \)
-1 x (3x + 1) > x
(-1 x 3x) + (-1 x 1) > x
-3x - 1 > x
-3x - 1 - x > 0
-3x - x > 1
-4x > 1
x > \( \frac{1}{-4} \)
x > -\(\frac{1}{4}\)
What is 4a + 6a?
| 10a2 | |
| 10a | |
| -2a2 | |
| 24a |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
4a + 6a = 10a