| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.61 |
| Score | 0% | 72% |
A coordinate grid is composed of which of the following?
x-axis |
|
origin |
|
y-axis |
|
all of these |
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.
Solve for b:
3b + 1 = \( \frac{b}{-4} \)
| \(\frac{6}{7}\) | |
| -\(\frac{4}{13}\) | |
| \(\frac{36}{55}\) | |
| \(\frac{5}{19}\) |
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 equal sign and the answer on the other.
3b + 1 = \( \frac{b}{-4} \)
-4 x (3b + 1) = b
(-4 x 3b) + (-4 x 1) = b
-12b - 4 = b
-12b - 4 - b = 0
-12b - b = 4
-13b = 4
b = \( \frac{4}{-13} \)
b = -\(\frac{4}{13}\)
Solve for c:
-2c + 3 = -4 - 6c
| -1\(\frac{2}{3}\) | |
| \(\frac{1}{7}\) | |
| -1\(\frac{3}{4}\) | |
| -\(\frac{1}{2}\) |
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 equal sign and the answer on the other.
-2c + 3 = -4 - 6c
-2c = -4 - 6c - 3
-2c + 6c = -4 - 3
4c = -7
c = \( \frac{-7}{4} \)
c = -1\(\frac{3}{4}\)
If a = 4, b = 9, c = 8, and d = 1, what is the perimeter of this quadrilateral?
| 19 | |
| 26 | |
| 22 | |
| 10 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 4 + 9 + 8 + 1
p = 22
If AD = 16 and BD = 9, AB = ?
| 6 | |
| 8 | |
| 7 | |
| 12 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BD