| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.68 |
| Score | 0% | 74% |
On this circle, line segment AB is the:
radius |
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circumference |
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chord |
|
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).
If a = 9, b = 5, c = 3, and d = 1, what is the perimeter of this quadrilateral?
| 11 | |
| 18 | |
| 9 | |
| 24 |
Perimeter is equal to the sum of the four sides:
p = a + b + c + d
p = 9 + 5 + 3 + 1
p = 18
When two lines intersect, adjacent angles are __________ (they add up to 180°) and angles across from either other are __________ (they're equal).
vertical, supplementary |
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acute, obtuse |
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supplementary, vertical |
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obtuse, acute |
Angles around a line add up to 180°. Angles around a point add up to 360°. When two lines intersect, adjacent angles are supplementary (they add up to 180°) and angles across from either other are vertical (they're equal).
If b = 8 and z = 1, what is the value of -4b(b - z)?
| 294 | |
| -351 | |
| -180 | |
| -224 |
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.)
-4b(b - z)
-4(8)(8 - 1)
-4(8)(7)
(-32)(7)
-224
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Last |
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Odd |
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First |
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Inside |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses.