| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
A tiger in a zoo has consumed 63 pounds of food in 9 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 84 pounds?
| 10 | |
| 3 | |
| 9 | |
| 2 |
If the tiger has consumed 63 pounds of food in 9 days that's \( \frac{63}{9} \) = 7 pounds of food per day. The tiger needs to consume 84 - 63 = 21 more pounds of food to reach 84 pounds total. At 7 pounds of food per day that's \( \frac{21}{7} \) = 3 more days.
Which of these numbers is a factor of 20?
| 23 | |
| 12 | |
| 24 | |
| 5 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 20 are 1, 2, 4, 5, 10, 20.
If a car travels 450 miles in 9 hours, what is the average speed?
| 45 mph | |
| 50 mph | |
| 40 mph | |
| 25 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)If a mayor is elected with 89% of the votes cast and 39% of a town's 47,000 voters cast a vote, how many votes did the mayor receive?
| 9,348 | |
| 16,314 | |
| 13,931 | |
| 15,397 |
If 39% of the town's 47,000 voters cast ballots the number of votes cast is:
(\( \frac{39}{100} \)) x 47,000 = \( \frac{1,833,000}{100} \) = 18,330
The mayor got 89% of the votes cast which is:
(\( \frac{89}{100} \)) x 18,330 = \( \frac{1,631,370}{100} \) = 16,314 votes.
What is \( \frac{20\sqrt{20}}{4\sqrt{5}} \)?
| \(\frac{1}{5}\) \( \sqrt{\frac{1}{4}} \) | |
| 5 \( \sqrt{\frac{1}{4}} \) | |
| 4 \( \sqrt{\frac{1}{5}} \) | |
| 5 \( \sqrt{4} \) |
To divide terms with radicals, divide the coefficients and radicands separately:
\( \frac{20\sqrt{20}}{4\sqrt{5}} \)
\( \frac{20}{4} \) \( \sqrt{\frac{20}{5}} \)
5 \( \sqrt{4} \)