| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.60 |
| Score | 0% | 72% |
If there were a total of 450 raffle tickets sold and you bought 9 tickets, what's the probability that you'll win the raffle?
| 2% | |
| 4% | |
| 14% | |
| 8% |
You have 9 out of the total of 450 raffle tickets sold so you have a (\( \frac{9}{450} \)) x 100 = \( \frac{9 \times 100}{450} \) = \( \frac{900}{450} \) = 2% chance to win the raffle.
Convert x-2 to remove the negative exponent.
| \( \frac{-2}{x} \) | |
| \( \frac{-1}{-2x} \) | |
| \( \frac{1}{x^2} \) | |
| \( \frac{-2}{-x} \) |
To convert a negative exponent to a positive exponent, calculate the positive exponent then take the reciprocal.
If a car travels 45 miles in 3 hours, what is the average speed?
| 20 mph | |
| 45 mph | |
| 70 mph | |
| 15 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)A factor is a positive __________ that divides evenly into a given number.
integer |
|
improper fraction |
|
mixed number |
|
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, __________ ?
| 49 | |
| 40 | |
| 46 | |
| 37 |
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