| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.81 |
| Score | 0% | 76% |
The endpoints of this line segment are at (-2, -3) and (2, -5). What is the slope of this line?
| 2 | |
| -\(\frac{1}{2}\) | |
| \(\frac{1}{2}\) | |
| 1 |
The slope of this line is the change in y divided by the change in x. The endpoints of this line segment are at (-2, -3) and (2, -5) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(-5.0) - (-3.0)}{(2) - (-2)} \) = \( \frac{-2}{4} \)A quadrilateral is a shape with __________ sides.
3 |
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2 |
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5 |
|
4 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.
A right angle measures:
360° |
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90° |
|
45° |
|
180° |
A right angle measures 90 degrees and is the intersection of two perpendicular lines. In diagrams, a right angle is indicated by a small box completing a square with the perpendicular lines.
Simplify 2a x 8b.
| 16a2b2 | |
| 16\( \frac{a}{b} \) | |
| 10ab | |
| 16ab |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
2a x 8b = (2 x 8) (a x b) = 16ab
If angle a = 39° and angle b = 50° what is the length of angle c?
| 99° | |
| 54° | |
| 91° | |
| 62° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 39° - 50° = 91°