| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
If there were a total of 250 raffle tickets sold and you bought 12 tickets, what's the probability that you'll win the raffle?
| 7% | |
| 12% | |
| 5% | |
| 9% |
You have 12 out of the total of 250 raffle tickets sold so you have a (\( \frac{12}{250} \)) x 100 = \( \frac{12 \times 100}{250} \) = \( \frac{1200}{250} \) = 5% chance to win the raffle.
Simplify \( \frac{16}{52} \).
| \( \frac{7}{17} \) | |
| \( \frac{4}{13} \) | |
| \( \frac{7}{15} \) | |
| \( \frac{9}{19} \) |
To simplify this fraction, first find the greatest common factor between them. The factors of 16 are [1, 2, 4, 8, 16] and the factors of 52 are [1, 2, 4, 13, 26, 52]. They share 3 factors [1, 2, 4] making 4 their greatest common factor (GCF).
Next, divide both numerator and denominator by the GCF:
\( \frac{16}{52} \) = \( \frac{\frac{16}{4}}{\frac{52}{4}} \) = \( \frac{4}{13} \)
| 1 | |
| 1.2 | |
| 6.4 | |
| 0.6 |
1
If \(\left|a\right| = 7\), which of the following best describes a?
none of these is correct |
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a = -7 |
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a = 7 |
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a = 7 or a = -7 |
The absolute value is the positive magnitude of a particular number or variable and is indicated by two vertical lines: \(\left|-5\right| = 5\). In the case of a variable absolute value (\(\left|a\right| = 5\)) the value of a can be either positive or negative (a = -5 or a = 5).
Which of the following is not an integer?
1 |
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0 |
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-1 |
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\({1 \over 2}\) |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.