| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.24 |
| Score | 0% | 65% |
If there were a total of 350 raffle tickets sold and you bought 14 tickets, what's the probability that you'll win the raffle?
| 7% | |
| 3% | |
| 9% | |
| 4% |
You have 14 out of the total of 350 raffle tickets sold so you have a (\( \frac{14}{350} \)) x 100 = \( \frac{14 \times 100}{350} \) = \( \frac{1400}{350} \) = 4% chance to win the raffle.
If a car travels 45 miles in 3 hours, what is the average speed?
| 40 mph | |
| 20 mph | |
| 60 mph | |
| 15 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)What is \( \frac{2}{9} \) x \( \frac{3}{6} \)?
| \(\frac{1}{9}\) | |
| \(\frac{3}{28}\) | |
| \(\frac{2}{3}\) | |
| \(\frac{2}{15}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{2}{9} \) x \( \frac{3}{6} \) = \( \frac{2 x 3}{9 x 6} \) = \( \frac{6}{54} \) = \(\frac{1}{9}\)
The __________ is the smallest positive integer that is a multiple of two or more integers.
least common factor |
|
absolute value |
|
least common multiple |
|
greatest common factor |
The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.
How many 2\(\frac{1}{2}\) gallon cans worth of fuel would you need to pour into an empty 20 gallon tank to fill it exactly halfway?
| 8 | |
| 90 | |
| 2 | |
| 4 |
To fill a 20 gallon tank exactly halfway you'll need 10 gallons of fuel. Each fuel can holds 2\(\frac{1}{2}\) gallons so:
cans = \( \frac{10 \text{ gallons}}{2\frac{1}{2} \text{ gallons}} \) = 4