| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
Which of the following is not an integer?
1 |
|
-1 |
|
\({1 \over 2}\) |
|
0 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
| 1 | |
| 1.5 | |
| 4.8 | |
| 1.2 |
1
In a class of 20 students, 5 are taking German and 9 are taking Spanish. Of the students studying German or Spanish, 2 are taking both courses. How many students are not enrolled in either course?
| 19 | |
| 12 | |
| 11 | |
| 8 |
The number of students taking German or Spanish is 5 + 9 = 14. Of that group of 14, 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 14 - 2 = 12 who are taking at least one language. 20 - 12 = 8 students who are not taking either language.
Simplify \( \sqrt{8} \)
| 9\( \sqrt{4} \) | |
| 2\( \sqrt{2} \) | |
| 3\( \sqrt{2} \) | |
| 4\( \sqrt{4} \) |
To simplify a radical, factor out the perfect squares:
\( \sqrt{8} \)
\( \sqrt{4 \times 2} \)
\( \sqrt{2^2 \times 2} \)
2\( \sqrt{2} \)
If there were a total of 200 raffle tickets sold and you bought 4 tickets, what's the probability that you'll win the raffle?
| 18% | |
| 9% | |
| 2% | |
| 5% |
You have 4 out of the total of 200 raffle tickets sold so you have a (\( \frac{4}{200} \)) x 100 = \( \frac{4 \times 100}{200} \) = \( \frac{400}{200} \) = 2% chance to win the raffle.