| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
A(n) __________ is to a parallelogram as a square is to a rectangle.
quadrilateral |
|
rhombus |
|
triangle |
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trapezoid |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
What is 4a - 9a?
| -5a | |
| -5a2 | |
| -5 | |
| 13a2 |
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 - 9a = -5a
A(n) __________ is two expressions separated by an equal sign.
equation |
|
formula |
|
problem |
|
expression |
An equation is two expressions separated by an equal sign. The key to solving equations is to 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.
If a = c = 4, b = d = 3, what is the area of this rectangle?
| 20 | |
| 14 | |
| 12 | |
| 3 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 4 x 3
a = 12
The dimensions of this trapezoid are a = 5, b = 4, c = 7, d = 9, and h = 3. What is the area?
| 13\(\frac{1}{2}\) | |
| 19\(\frac{1}{2}\) | |
| 35 | |
| 14 |
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(4 + 9)(3)
a = ½(13)(3)
a = ½(39) = \( \frac{39}{2} \)
a = 19\(\frac{1}{2}\)