| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
What is the circumference of a circle with a radius of 12?
| 5π | |
| 24π | |
| 3π | |
| 14π |
The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:
c = πd
c = π(2 * r)
c = π(2 * 12)
c = 24π
What is 6a4 + 7a4?
| 13a4 | |
| -a8 | |
| 42a8 | |
| 13 |
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.
6a4 + 7a4 = 13a4
The dimensions of this cylinder are height (h) = 6 and radius (r) = 9. What is the volume?
| 225π | |
| 486π | |
| 18π | |
| 243π |
The volume of a cylinder is πr2h:
v = πr2h
v = π(92 x 6)
v = 486π
Which of the following is not required to define the slope-intercept equation for a line?
\({\Delta y \over \Delta x}\) |
|
y-intercept |
|
x-intercept |
|
slope |
A line on the coordinate grid can be defined by a slope-intercept equation: y = mx + b. For a given value of x, the value of y can be determined given the slope (m) and y-intercept (b) of the line. The slope of a line is change in y over change in x, \({\Delta y \over \Delta x}\), and the y-intercept is the y-coordinate where the line crosses the vertical y-axis.
A quadrilateral is a shape with __________ sides.
2 |
|
5 |
|
4 |
|
3 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.