| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.46 |
| Score | 0% | 69% |
What is \( \frac{-8y^6}{6y^3} \)?
| -1\(\frac{1}{3}\)y9 | |
| -1\(\frac{1}{3}\)y2 | |
| -1\(\frac{1}{3}\)y3 | |
| -1\(\frac{1}{3}\)y-3 |
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:
\( \frac{-8y^6}{6y^3} \)
\( \frac{-8}{6} \) y(6 - 3)
-1\(\frac{1}{3}\)y3
Which of these numbers is a factor of 32?
| 30 | |
| 2 | |
| 3 | |
| 27 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 32 are 1, 2, 4, 8, 16, 32.
What is -8x6 + 2x6?
| -6x12 | |
| -6x6 | |
| -10x-6 | |
| 10x6 |
To add or subtract terms with exponents, both the base and the exponent must be the same. In this case they are so add the coefficients and retain the base and exponent:
-8x6 + 2x6
(-8 + 2)x6
-6x6
What is \( \frac{4}{8} \) x \( \frac{4}{7} \)?
| \(\frac{1}{6}\) | |
| 2 | |
| \(\frac{3}{49}\) | |
| \(\frac{2}{7}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{4}{8} \) x \( \frac{4}{7} \) = \( \frac{4 x 4}{8 x 7} \) = \( \frac{16}{56} \) = \(\frac{2}{7}\)
What is the greatest common factor of 48 and 60?
| 44 | |
| 9 | |
| 12 | |
| 27 |
The factors of 48 are [1, 2, 3, 4, 6, 8, 12, 16, 24, 48] and the factors of 60 are [1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60]. They share 6 factors [1, 2, 3, 4, 6, 12] making 12 the greatest factor 48 and 60 have in common.