| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.28 |
| Score | 0% | 66% |
4! = ?
4 x 3 x 2 x 1 |
|
4 x 3 |
|
5 x 4 x 3 x 2 x 1 |
|
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.
A tiger in a zoo has consumed 42 pounds of food in 7 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 84 pounds?
| 2 | |
| 9 | |
| 7 | |
| 13 |
If the tiger has consumed 42 pounds of food in 7 days that's \( \frac{42}{7} \) = 6 pounds of food per day. The tiger needs to consume 84 - 42 = 42 more pounds of food to reach 84 pounds total. At 6 pounds of food per day that's \( \frac{42}{6} \) = 7 more days.
What is \( \frac{3}{7} \) x \( \frac{4}{8} \)?
| 1\(\frac{5}{7}\) | |
| \(\frac{1}{5}\) | |
| \(\frac{1}{20}\) | |
| \(\frac{3}{14}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{3}{7} \) x \( \frac{4}{8} \) = \( \frac{3 x 4}{7 x 8} \) = \( \frac{12}{56} \) = \(\frac{3}{14}\)
The __________ is the smallest positive integer that is a multiple of two or more integers.
least common factor |
|
least common multiple |
|
absolute value |
|
greatest common factor |
The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.
What is \( \frac{-6a^6}{6a^2} \)?
| -a3 | |
| -a8 | |
| -a4 | |
| -a12 |
To divide terms with exponents, the base of both exponents must be the same. In this case they are so divide the coefficients and subtract the exponents:
\( \frac{-6a^6}{6a^2} \)
\( \frac{-6}{6} \) a(6 - 2)
-a4