| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.04 |
| Score | 0% | 61% |
A(n) __________ is two expressions separated by an equal sign.
equation |
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formula |
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expression |
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problem |
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 the base of this triangle is 5 and the height is 9, what is the area?
| 22\(\frac{1}{2}\) | |
| 55 | |
| 50 | |
| 91 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 5 x 9 = \( \frac{45}{2} \) = 22\(\frac{1}{2}\)
If a = c = 3, b = d = 7, and the blue angle = 54°, what is the area of this parallelogram?
| 36 | |
| 21 | |
| 8 | |
| 27 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 3 x 7
a = 21
A(n) __________ is to a parallelogram as a square is to a rectangle.
trapezoid |
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quadrilateral |
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rhombus |
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triangle |
A rhombus is a parallelogram with four equal-length sides. A square is a rectangle with four equal-length sides.
The dimensions of this trapezoid are a = 5, b = 4, c = 8, d = 6, and h = 3. What is the area?
| 21 | |
| 22\(\frac{1}{2}\) | |
| 15 | |
| 30 |
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 + 6)(3)
a = ½(10)(3)
a = ½(30) = \( \frac{30}{2} \)
a = 15