| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
What is the circumference of a circle with a diameter of 17?
| 11π | |
| 18π | |
| 9π | |
| 17π |
The formula for circumference is circle diameter x π:
c = πd
c = 17π
To multiply binomials, use the FOIL method. Which of the following is not a part of the FOIL method?
Odd |
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Last |
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Inside |
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First |
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.
Simplify (6a)(2ab) - (2a2)(8b).
| 4ab2 | |
| 28ab2 | |
| -4a2b | |
| 80a2b |
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.
(6a)(2ab) - (2a2)(8b)
(6 x 2)(a x a x b) - (2 x 8)(a2 x b)
(12)(a1+1 x b) - (16)(a2b)
12a2b - 16a2b
-4a2b
Solve for b:
-8b + 1 > 8 - 3b
| b > -\(\frac{2}{3}\) | |
| b > \(\frac{5}{7}\) | |
| b > \(\frac{3}{4}\) | |
| b > -1\(\frac{2}{5}\) |
To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the > sign and the answer on the other.
-8b + 1 > 8 - 3b
-8b > 8 - 3b - 1
-8b + 3b > 8 - 1
-5b > 7
b > \( \frac{7}{-5} \)
b > -1\(\frac{2}{5}\)
Which of the following statements about a triangle is not true?
sum of interior angles = 180° |
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area = ½bh |
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exterior angle = sum of two adjacent interior angles |
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perimeter = sum of side lengths |
A triangle is a three-sided polygon. It has three interior angles that add up to 180° (a + b + c = 180°). An exterior angle of a triangle is equal to the sum of the two interior angles that are opposite (d = b + c). The perimeter of a triangle is equal to the sum of the lengths of its three sides, the height of a triangle is equal to the length from the base to the opposite vertex (angle) and the area equals one-half triangle base x height: a = ½ base x height.