| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.55 |
| Score | 0% | 71% |
What is 8a6 + 9a6?
| a612 | |
| 17 | |
| 72a12 | |
| 17a6 |
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.
8a6 + 9a6 = 17a6
The dimensions of this cylinder are height (h) = 2 and radius (r) = 9. What is the volume?
| 50π | |
| 150π | |
| 162π | |
| 128π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(92 x 2)
v = 162π
If angle a = 68° and angle b = 34° what is the length of angle c?
| 120° | |
| 56° | |
| 62° | |
| 78° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 68° - 34° = 78°
If a = 4, b = 9, c = 6, and d = 3, what is the perimeter of this quadrilateral?
| 22 | |
| 28 | |
| 11 | |
| 20 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 4 + 9 + 6 + 3
p = 22
If the base of this triangle is 8 and the height is 2, what is the area?
| 82\(\frac{1}{2}\) | |
| 15 | |
| 105 | |
| 8 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 8 x 2 = \( \frac{16}{2} \) = 8