| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.21 |
| Score | 0% | 64% |
Which types of triangles will always have at least two sides of equal length?
equilateral and isosceles |
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equilateral, isosceles and right |
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equilateral and right |
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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.
On this circle, line segment CD is the:
diameter |
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radius |
|
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).
If angle a = 49° and angle b = 21° what is the length of angle c?
| 110° | |
| 72° | |
| 129° | |
| 88° |
The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 49° - 21° = 110°
Simplify 5a x 8b.
| 40\( \frac{a}{b} \) | |
| 40ab | |
| 40\( \frac{b}{a} \) | |
| 40a2b2 |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
5a x 8b = (5 x 8) (a x b) = 40ab
Simplify (3a)(8ab) + (4a2)(5b).
| 44a2b | |
| -4a2b | |
| 99a2b | |
| 4a2b |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
(3a)(8ab) + (4a2)(5b)
(3 x 8)(a x a x b) + (4 x 5)(a2 x b)
(24)(a1+1 x b) + (20)(a2b)
24a2b + 20a2b
44a2b