| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.71 |
| Score | 0% | 74% |
If AD = 28 and BD = 26, AB = ?
| 13 | |
| 6 | |
| 2 | |
| 19 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BDWhat is 4a + 3a?
| 7a | |
| 12a | |
| a2 | |
| 1 |
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.
4a + 3a = 7a
What is 5a9 - 5a9?
| 25a9 | |
| 0a9 | |
| 10a18 | |
| a918 |
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.
5a9 - 5a9 = 0a9
A coordinate grid is composed of which of the following?
y-axis |
|
origin |
|
x-axis |
|
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.
The dimensions of this trapezoid are a = 5, b = 7, c = 7, d = 2, and h = 4. What is the area?
| 10\(\frac{1}{2}\) | |
| 18 | |
| 12 | |
| 22\(\frac{1}{2}\) |
The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:
a = ½(b + d)(h)
a = ½(7 + 2)(4)
a = ½(9)(4)
a = ½(36) = \( \frac{36}{2} \)
a = 18