| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
If a = c = 4, b = d = 8, what is the area of this rectangle?
| 32 | |
| 3 | |
| 7 | |
| 12 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 4 x 8
a = 32
Solve for b:
-2b + 9 = \( \frac{b}{7} \)
| \(\frac{54}{71}\) | |
| -1\(\frac{7}{65}\) | |
| 4\(\frac{1}{5}\) | |
| -1\(\frac{1}{17}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.
-2b + 9 = \( \frac{b}{7} \)
7 x (-2b + 9) = b
(7 x -2b) + (7 x 9) = b
-14b + 63 = b
-14b + 63 - b = 0
-14b - b = -63
-15b = -63
b = \( \frac{-63}{-15} \)
b = 4\(\frac{1}{5}\)
A coordinate grid is composed of which of the following?
x-axis |
|
y-axis |
|
all of these |
|
origin |
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 = 5, c = 6, d = 5, and h = 3. What is the area?
| 15 | |
| 22\(\frac{1}{2}\) | |
| 10 | |
| 16 |
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(5 + 5)(3)
a = ½(10)(3)
a = ½(30) = \( \frac{30}{2} \)
a = 15
A trapezoid is a quadrilateral with one set of __________ sides.
equal length |
|
parallel |
|
right angle |
|
equal angle |
A trapezoid is a quadrilateral with one set of parallel sides.