| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.94 |
| Score | 0% | 59% |
The dimensions of this trapezoid are a = 4, b = 4, c = 6, d = 6, and h = 3. What is the area?
| 25\(\frac{1}{2}\) | |
| 28 | |
| 14 | |
| 15 |
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
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 length of AB equals the length of BD, point B __________ this line segment.
intersects |
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bisects |
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midpoints |
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trisects |
A line segment is a portion of a line with a measurable length. The midpoint of a line segment is the point exactly halfway between the endpoints. The midpoint bisects (cuts in half) the line segment.
If a = -6 and x = 6, what is the value of 9a(a - x)?
| 210 | |
| 648 | |
| 0 | |
| -126 |
To solve this equation, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
9a(a - x)
9(-6)(-6 - 6)
9(-6)(-12)
(-54)(-12)
648
Which types of triangles will always have at least two sides of equal length?
equilateral, isosceles and right |
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equilateral and right |
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equilateral and isosceles |
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isosceles and right |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.