| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
If angle a = 44° and angle b = 53° what is the length of angle c?
| 115° | |
| 117° | |
| 83° | |
| 100° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 44° - 53° = 83°
Solve for c:
7c + 6 > \( \frac{c}{9} \)
| c > \(\frac{5}{29}\) | |
| c > -\(\frac{27}{31}\) | |
| c > -1\(\frac{1}{5}\) | |
| c > \(\frac{64}{71}\) |
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.
7c + 6 > \( \frac{c}{9} \)
9 x (7c + 6) > c
(9 x 7c) + (9 x 6) > c
63c + 54 > c
63c + 54 - c > 0
63c - c > -54
62c > -54
c > \( \frac{-54}{62} \)
c > -\(\frac{27}{31}\)
Solve for c:
7c - 7 = 3 + 6c
| -1 | |
| 10 | |
| -4\(\frac{1}{2}\) | |
| -\(\frac{3}{8}\) |
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.
7c - 7 = 3 + 6c
7c = 3 + 6c + 7
7c - 6c = 3 + 7
c = 10
Order the following types of angle from least number of degrees to most number of degrees.
acute, right, obtuse |
|
right, acute, obtuse |
|
acute, obtuse, right |
|
right, obtuse, acute |
An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.
If a = c = 6, b = d = 4, what is the area of this rectangle?
| 24 | |
| 27 | |
| 1 | |
| 36 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 6 x 4
a = 24