| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
If a = c = 1, b = d = 8, what is the area of this rectangle?
| 30 | |
| 8 | |
| 25 | |
| 63 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 1 x 8
a = 8
Simplify 2a x 5b.
| 10\( \frac{b}{a} \) | |
| 7ab | |
| 10ab | |
| 10a2b2 |
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 5b = (2 x 5) (a x b) = 10ab
The endpoints of this line segment are at (-2, -4) and (2, 6). What is the slope of this line?
| 1 | |
| -3 | |
| 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, -4) and (2, 6) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(6.0) - (-4.0)}{(2) - (-2)} \) = \( \frac{10}{4} \)Simplify (y + 9)(y - 7)
| y2 + 2y - 63 | |
| y2 - 2y - 63 | |
| y2 + 16y + 63 | |
| y2 - 16y + 63 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y + 9)(y - 7)
(y x y) + (y x -7) + (9 x y) + (9 x -7)
y2 - 7y + 9y - 63
y2 + 2y - 63
A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
|
right angle |
|
equal angle |
|
equal length |
A trapezoid is a quadrilateral with one set of parallel sides.