| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
On this circle, line segment CD is the:
diameter |
|
radius |
|
circumference |
|
chord |
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).
What is 9a6 - 8a6?
| 1 | |
| a612 | |
| 17 | |
| 1a6 |
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.
9a6 - 8a6 = 1a6
What is 9a + 8a?
| 1 | |
| 17a | |
| a2 | |
| 17a2 |
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.
9a + 8a = 17a
What is 7a - 4a?
| a2 | |
| 11a2 | |
| 3a | |
| 11 |
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.
7a - 4a = 3a
The dimensions of this cylinder are height (h) = 1 and radius (r) = 9. What is the volume?
| 441π | |
| 2π | |
| 196π | |
| 81π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(92 x 1)
v = 81π