| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.77 |
| Score | 0% | 55% |
Which types of triangles will always have at least two sides of equal length?
equilateral and right |
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equilateral, isosceles and right |
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isosceles and right |
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equilateral and isosceles |
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.
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).
Solve -6c - 7c = 9c - 5x + 3 for c in terms of x.
| -2\(\frac{1}{5}\)x + 1\(\frac{1}{5}\) | |
| -1\(\frac{6}{7}\)x + \(\frac{6}{7}\) | |
| -x + \(\frac{2}{7}\) | |
| -\(\frac{2}{15}\)x - \(\frac{1}{5}\) |
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.
-6c - 7x = 9c - 5x + 3
-6c = 9c - 5x + 3 + 7x
-6c - 9c = -5x + 3 + 7x
-15c = 2x + 3
c = \( \frac{2x + 3}{-15} \)
c = \( \frac{2x}{-15} \) + \( \frac{3}{-15} \)
c = -\(\frac{2}{15}\)x - \(\frac{1}{5}\)
If a = c = 8, b = d = 1, and the blue angle = 68°, what is the area of this parallelogram?
| 10 | |
| 2 | |
| 8 | |
| 64 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 8 x 1
a = 8
If AD = 20 and BD = 15, AB = ?
| 13 | |
| 5 | |
| 12 | |
| 6 |
The entire length of this line is represented by AD which is AB + BD:
AD = AB + BD
Solving for AB:AB = AD - BD