| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.95 |
| Score | 0% | 59% |
The dimensions of this cylinder are height (h) = 8 and radius (r) = 7. What is the volume?
| 576π | |
| 392π | |
| 180π | |
| 4π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(72 x 8)
v = 392π
What is 7a8 - 7a8?
| 0 | |
| 49a16 | |
| 16 | |
| 0a8 |
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.
7a8 - 7a8 = 0a8
On this circle, line segment CD is the:
chord |
|
diameter |
|
radius |
|
circumference |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
Find the value of a:
2a + y = 3
3a - 2y = 3
| -2\(\frac{1}{5}\) | |
| -\(\frac{5}{54}\) | |
| \(\frac{2}{19}\) | |
| 1\(\frac{2}{7}\) |
You need to find the value of a so solve the first equation in terms of y:
2a + y = 3
y = 3 - 2a
then substitute the result (3 - 2a) into the second equation:
3a - 2(3 - 2a) = 3
3a + (-2 x 3) + (-2 x -2a) = 3
3a - 6 + 4a = 3
3a + 4a = 3 + 6
7a = 9
a = \( \frac{9}{7} \)
a = 1\(\frac{2}{7}\)
If angle a = 29° and angle b = 68° what is the length of angle c?
| 101° | |
| 83° | |
| 94° | |
| 91° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 29° - 68° = 83°