| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.99 |
| Score | 0% | 60% |
Solve for z:
-3z - 9 < \( \frac{z}{-2} \)
| z < -\(\frac{1}{3}\) | |
| z < -\(\frac{27}{28}\) | |
| z < -\(\frac{21}{62}\) | |
| z < -3\(\frac{3}{5}\) |
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 < sign and the answer on the other.
-3z - 9 < \( \frac{z}{-2} \)
-2 x (-3z - 9) < z
(-2 x -3z) + (-2 x -9) < z
6z + 18 < z
6z + 18 - z < 0
6z - z < -18
5z < -18
z < \( \frac{-18}{5} \)
z < -3\(\frac{3}{5}\)
The formula for the area of a circle is which of the following?
c = π d |
|
c = π d2 |
|
c = π r2 |
|
c = π r |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
If AD = 29 and BD = 19, AB = ?
| 12 | |
| 4 | |
| 19 | |
| 10 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDIf a = c = 7, b = d = 8, and the blue angle = 78°, what is the area of this parallelogram?
| 8 | |
| 56 | |
| 10 | |
| 9 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 7 x 8
a = 56
A coordinate grid is composed of which of the following?
all of these |
|
x-axis |
|
y-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.