| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.18 |
| Score | 0% | 64% |
Solve 3c - 3c = -2c + 6x - 7 for c in terms of x.
| 1\(\frac{4}{5}\)x - 1\(\frac{2}{5}\) | |
| \(\frac{2}{3}\)x + \(\frac{2}{5}\) | |
| x + 3 | |
| -\(\frac{1}{2}\)x - 3 |
To solve this equation, isolate the variable for which you are solving (c) on one side of the equation and put everything else on the other side.
3c - 3x = -2c + 6x - 7
3c = -2c + 6x - 7 + 3x
3c + 2c = 6x - 7 + 3x
5c = 9x - 7
c = \( \frac{9x - 7}{5} \)
c = \( \frac{9x}{5} \) + \( \frac{-7}{5} \)
c = 1\(\frac{4}{5}\)x - 1\(\frac{2}{5}\)
A coordinate grid is composed of which of the following?
all of these |
|
y-axis |
|
x-axis |
|
origin |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
Simplify (y + 9)(y - 8)
| y2 - 17y + 72 | |
| y2 - y - 72 | |
| y2 + y - 72 | |
| y2 + 17y + 72 |
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 - 8)
(y x y) + (y x -8) + (9 x y) + (9 x -8)
y2 - 8y + 9y - 72
y2 + y - 72
A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
|
equal length |
|
right angle |
|
equal angle |
A trapezoid is a quadrilateral with one set of parallel sides.
The dimensions of this cylinder are height (h) = 1 and radius (r) = 8. What is the volume?
| 75π | |
| 648π | |
| 4π | |
| 64π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(82 x 1)
v = 64π