| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.23 |
| Score | 0% | 65% |
What is \( \frac{5y^8}{7y^2} \)?
| 1\(\frac{2}{5}\)y10 | |
| \(\frac{5}{7}\)y6 | |
| \(\frac{5}{7}\)y-6 | |
| 1\(\frac{2}{5}\)y6 |
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:
\( \frac{5y^8}{7y^2} \)
\( \frac{5}{7} \) y(8 - 2)
\(\frac{5}{7}\)y6
What is 3c5 x 6c4?
| 18c-1 | |
| 18c9 | |
| 9c5 | |
| 18c |
To multiply terms with exponents, the base of both exponents must be the same. In this case they are so multiply the coefficients and add the exponents:
3c5 x 6c4
(3 x 6)c(5 + 4)
18c9
What is 7\( \sqrt{7} \) x 4\( \sqrt{7} \)?
| 28\( \sqrt{14} \) | |
| 28\( \sqrt{7} \) | |
| 196 | |
| 11\( \sqrt{49} \) |
To multiply terms with radicals, multiply the coefficients and radicands separately:
7\( \sqrt{7} \) x 4\( \sqrt{7} \)
(7 x 4)\( \sqrt{7 \times 7} \)
28\( \sqrt{49} \)
Now we need to simplify the radical:
28\( \sqrt{49} \)
28\( \sqrt{7^2} \)
(28)(7)
196
What is \( \frac{2}{6} \) ÷ \( \frac{3}{5} \)?
| \(\frac{4}{63}\) | |
| 1\(\frac{2}{3}\) | |
| \(\frac{1}{15}\) | |
| \(\frac{5}{9}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{2}{6} \) ÷ \( \frac{3}{5} \) = \( \frac{2}{6} \) x \( \frac{5}{3} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{2}{6} \) x \( \frac{5}{3} \) = \( \frac{2 x 5}{6 x 3} \) = \( \frac{10}{18} \) = \(\frac{5}{9}\)
What is (a4)4?
| a0 | |
| a8 | |
| a16 | |
| 4a4 |
To raise a term with an exponent to another exponent, retain the base and multiply the exponents:
(a4)4