| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.26 |
| Score | 0% | 65% |
Order the following types of angle from least number of degrees to most number of degrees.
acute, obtuse, right |
|
right, acute, obtuse |
|
right, obtuse, acute |
|
acute, right, obtuse |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
What is 3a + 6a?
| 9a | |
| 9 | |
| -3 | |
| -3a2 |
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.
3a + 6a = 9a
Solve for z:
-4z - 9 > \( \frac{z}{-6} \)
| z > -1\(\frac{7}{17}\) | |
| z > -2\(\frac{8}{23}\) | |
| z > -\(\frac{8}{17}\) | |
| z > \(\frac{32}{71}\) |
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.
-4z - 9 > \( \frac{z}{-6} \)
-6 x (-4z - 9) > z
(-6 x -4z) + (-6 x -9) > z
24z + 54 > z
24z + 54 - z > 0
24z - z > -54
23z > -54
z > \( \frac{-54}{23} \)
z > -2\(\frac{8}{23}\)
Solve for b:
7b + 7 = \( \frac{b}{4} \)
| -1\(\frac{1}{27}\) | |
| -\(\frac{18}{47}\) | |
| \(\frac{12}{17}\) | |
| -1\(\frac{7}{17}\) |
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.
7b + 7 = \( \frac{b}{4} \)
4 x (7b + 7) = b
(4 x 7b) + (4 x 7) = b
28b + 28 = b
28b + 28 - b = 0
28b - b = -28
27b = -28
b = \( \frac{-28}{27} \)
b = -1\(\frac{1}{27}\)
If BD = 22 and AD = 25, AB = ?
| 11 | |
| 14 | |
| 9 | |
| 3 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BD