| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.21 |
| Score | 0% | 64% |
If a = c = 7, b = d = 5, what is the area of this rectangle?
| 81 | |
| 18 | |
| 35 | |
| 27 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 7 x 5
a = 35
On this circle, line segment AB is the:
diameter |
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circumference |
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radius |
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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).
On this circle, a line segment connecting point A to point D is called:
radius |
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chord |
|
circumference |
|
diameter |
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 9a + 2a = -3a + 5x - 2 for a in terms of x.
| \(\frac{2}{7}\)x + \(\frac{5}{7}\) | |
| \(\frac{1}{4}\)x - \(\frac{1}{6}\) | |
| -\(\frac{3}{7}\)x - \(\frac{3}{7}\) | |
| -5\(\frac{1}{2}\)x + 2\(\frac{1}{2}\) |
To solve this equation, isolate the variable for which you are solving (a) on one side of the equation and put everything else on the other side.
9a + 2x = -3a + 5x - 2
9a = -3a + 5x - 2 - 2x
9a + 3a = 5x - 2 - 2x
12a = 3x - 2
a = \( \frac{3x - 2}{12} \)
a = \( \frac{3x}{12} \) + \( \frac{-2}{12} \)
a = \(\frac{1}{4}\)x - \(\frac{1}{6}\)
A quadrilateral is a shape with __________ sides.
3 |
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2 |
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5 |
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4 |
A quadrilateral is a shape with four sides. The perimeter of a quadrilateral is the sum of the lengths of its four sides.