| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.78 |
| Score | 0% | 76% |
What is \( \frac{40\sqrt{63}}{8\sqrt{9}} \)?
| \(\frac{1}{7}\) \( \sqrt{\frac{1}{5}} \) | |
| 5 \( \sqrt{7} \) | |
| 7 \( \sqrt{\frac{1}{5}} \) | |
| \(\frac{1}{5}\) \( \sqrt{\frac{1}{7}} \) |
To divide terms with radicals, divide the coefficients and radicands separately:
\( \frac{40\sqrt{63}}{8\sqrt{9}} \)
\( \frac{40}{8} \) \( \sqrt{\frac{63}{9}} \)
5 \( \sqrt{7} \)
A factor is a positive __________ that divides evenly into a given number.
fraction |
|
mixed number |
|
integer |
|
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.
What is the next number in this sequence: 1, 4, 10, 19, 31, __________ ?
| 53 | |
| 44 | |
| 42 | |
| 46 |
The equation for this sequence is:
an = an-1 + 3(n - 1)
where n is the term's order in the sequence, an is the value of the term, and an-1 is the value of the term before an. This makes the next number:
a6 = a5 + 3(6 - 1)
a6 = 31 + 3(5)
a6 = 46
What is the distance in miles of a trip that takes 1 hour at an average speed of 25 miles per hour?
| 360 miles | |
| 90 miles | |
| 25 miles | |
| 140 miles |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for distance:
distance = \( \text{speed} \times \text{time} \)
distance = \( 25mph \times 1h \)
25 miles
What is \( \frac{3}{5} \) x \( \frac{1}{7} \)?
| \(\frac{3}{35}\) | |
| \(\frac{4}{25}\) | |
| \(\frac{16}{25}\) | |
| \(\frac{3}{5}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{3}{5} \) x \( \frac{1}{7} \) = \( \frac{3 x 1}{5 x 7} \) = \( \frac{3}{35} \) = \(\frac{3}{35}\)