| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
Convert y-4 to remove the negative exponent.
| \( \frac{-1}{-4y} \) | |
| \( \frac{1}{y^4} \) | |
| \( \frac{1}{y^{-4}} \) | |
| \( \frac{-1}{-4y^{4}} \) |
To convert a negative exponent to a positive exponent, calculate the positive exponent then take the reciprocal.
| 4.2 | |
| 1 | |
| 3.6 | |
| 2.1 |
1
Which of the following is not an integer?
1 |
|
\({1 \over 2}\) |
|
-1 |
|
0 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
What is \( \frac{2}{8} \) ÷ \( \frac{1}{5} \)?
| \(\frac{1}{14}\) | |
| \(\frac{1}{16}\) | |
| \(\frac{2}{81}\) | |
| 1\(\frac{1}{4}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{2}{8} \) ÷ \( \frac{1}{5} \) = \( \frac{2}{8} \) x \( \frac{5}{1} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{2}{8} \) x \( \frac{5}{1} \) = \( \frac{2 x 5}{8 x 1} \) = \( \frac{10}{8} \) = 1\(\frac{1}{4}\)
Which of these numbers is a factor of 16?
| 19 | |
| 16 | |
| 5 | |
| 6 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 16 are 1, 2, 4, 8, 16.