| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.80 |
| Score | 0% | 76% |
What is 9a - 5a?
| 4a | |
| 14a2 | |
| 4 | |
| a2 |
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 - 5a = 4a
If a = c = 4, b = d = 1, and the blue angle = 75°, what is the area of this parallelogram?
| 8 | |
| 9 | |
| 24 | |
| 4 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 4 x 1
a = 4
A coordinate grid is composed of which of the following?
x-axis |
|
y-axis |
|
origin |
|
all of these |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
What is 9a5 + 6a5?
| 15 | |
| 15a5 | |
| 3a10 | |
| 54a10 |
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.
9a5 + 6a5 = 15a5
What is the circumference of a circle with a radius of 3?
| 6π | |
| 4π | |
| 3π | |
| 10π |
The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:
c = πd
c = π(2 * r)
c = π(2 * 3)
c = 6π