| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
The endpoints of this line segment are at (-2, 2) and (2, 6). What is the slope of this line?
| -\(\frac{1}{2}\) | |
| 1 | |
| 2\(\frac{1}{2}\) | |
| \(\frac{1}{2}\) |
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, 2) and (2, 6) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(6.0) - (2.0)}{(2) - (-2)} \) = \( \frac{4}{4} \)What is 3a5 - 2a5?
| 1a5 | |
| 5 | |
| a10 | |
| 5a10 |
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.
3a5 - 2a5 = 1a5
Order the following types of angle from least number of degrees to most number of degrees.
right, obtuse, acute |
|
acute, right, obtuse |
|
acute, obtuse, right |
|
right, acute, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
Simplify (8a)(9ab) - (5a2)(5b).
| 47a2b | |
| 170a2b | |
| -47ab2 | |
| 97a2b |
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.
(8a)(9ab) - (5a2)(5b)
(8 x 9)(a x a x b) - (5 x 5)(a2 x b)
(72)(a1+1 x b) - (25)(a2b)
72a2b - 25a2b
47a2b
A quadrilateral is a shape with __________ sides.
5 |
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2 |
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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.