| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.81 |
| Score | 0% | 56% |
If the base of this triangle is 1 and the height is 1, what is the area?
| 15 | |
| \(\frac{1}{2}\) | |
| 45 | |
| 48 |
The area of a triangle is equal to ½ base x height:
a = ½bh
a = ½ x 1 x 1 = \( \frac{1}{2} \) = \(\frac{1}{2}\)
The formula for the area of a circle is which of the following?
a = π d |
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a = π r2 |
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a = π d2 |
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a = π r |
The circumference of a circle is the distance around its perimeter and equals π (approx. 3.14159) x diameter: c = π d. The area of a circle is π x (radius)2 : a = π r2.
Solve -9c - 5c = -5c - 4x + 2 for c in terms of x.
| \(\frac{1}{3}\)x + 1\(\frac{1}{3}\) | |
| -\(\frac{1}{7}\)x + 1\(\frac{1}{7}\) | |
| -\(\frac{1}{4}\)x - \(\frac{1}{2}\) | |
| -x + \(\frac{1}{2}\) |
To solve this equation, isolate the variable for which you are solving (c) on one side of the equation and put everything else on the other side.
-9c - 5x = -5c - 4x + 2
-9c = -5c - 4x + 2 + 5x
-9c + 5c = -4x + 2 + 5x
-4c = x + 2
c = \( \frac{x + 2}{-4} \)
c = \( \frac{x}{-4} \) + \( \frac{2}{-4} \)
c = -\(\frac{1}{4}\)x - \(\frac{1}{2}\)
If a = c = 2, b = d = 4, and the blue angle = 68°, what is the area of this parallelogram?
| 45 | |
| 8 | |
| 16 | |
| 42 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 2 x 4
a = 8
On this circle, a line segment connecting point A to point D is called:
diameter |
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radius |
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circumference |
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chord |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).