| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.59 |
| Score | 0% | 72% |
4! = ?
4 x 3 x 2 x 1 |
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3 x 2 x 1 |
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5 x 4 x 3 x 2 x 1 |
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4 x 3 |
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.
A factor is a positive __________ that divides evenly into a given number.
fraction |
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integer |
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mixed number |
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improper fraction |
A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.
If \(\left|a\right| = 7\), which of the following best describes a?
a = 7 |
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a = -7 |
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none of these is correct |
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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).
A bread recipe calls for 2\(\frac{5}{8}\) cups of flour. If you only have \(\frac{1}{2}\) cup, how much more flour is needed?
| 1\(\frac{1}{2}\) cups | |
| 2\(\frac{1}{8}\) cups | |
| 2 cups | |
| 2\(\frac{1}{2}\) cups |
The amount of flour you need is (2\(\frac{5}{8}\) - \(\frac{1}{2}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{21}{8} \) - \( \frac{4}{8} \)) cups
\( \frac{17}{8} \) cups
2\(\frac{1}{8}\) cups
Which of these numbers is a factor of 48?
| 3 | |
| 20 | |
| 38 | |
| 12 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 48.