| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
If a mayor is elected with 73% of the votes cast and 83% of a town's 38,000 voters cast a vote, how many votes did the mayor receive?
| 24,917 | |
| 23,024 | |
| 19,239 | |
| 17,347 |
If 83% of the town's 38,000 voters cast ballots the number of votes cast is:
(\( \frac{83}{100} \)) x 38,000 = \( \frac{3,154,000}{100} \) = 31,540
The mayor got 73% of the votes cast which is:
(\( \frac{73}{100} \)) x 31,540 = \( \frac{2,302,420}{100} \) = 23,024 votes.
4! = ?
5 x 4 x 3 x 2 x 1 |
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4 x 3 |
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4 x 3 x 2 x 1 |
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3 x 2 x 1 |
A factorial has the form n! and is the product of the integer (n) and all the positive integers below it. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.
Convert 7,114,000 to scientific notation.
| 7.114 x 10-5 | |
| 7.114 x 106 | |
| 7.114 x 107 | |
| 71.14 x 105 |
A number in scientific notation has the format 0.000 x 10exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:
7,114,000 in scientific notation is 7.114 x 106
In a class of 28 students, 12 are taking German and 10 are taking Spanish. Of the students studying German or Spanish, 2 are taking both courses. How many students are not enrolled in either course?
| 28 | |
| 25 | |
| 8 | |
| 13 |
The number of students taking German or Spanish is 12 + 10 = 22. Of that group of 22, 2 are taking both languages so they've been counted twice (once in the German group and once in the Spanish group). Subtracting them out leaves 22 - 2 = 20 who are taking at least one language. 28 - 20 = 8 students who are not taking either language.
Which of the following is a mixed number?
\({a \over 5} \) |
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\(1 {2 \over 5} \) |
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\({5 \over 7} \) |
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\({7 \over 5} \) |
A rational number (or fraction) is represented as a ratio between two integers, a and b, and has the form \({a \over b}\) where a is the numerator and b is the denominator. An improper fraction (\({5 \over 3} \)) has a numerator with a greater absolute value than the denominator and can be converted into a mixed number (\(1 {2 \over 3} \)) which has a whole number part and a fractional part.