| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.48 |
| Score | 0% | 70% |
The total water usage for a city is 30,000 gallons each day. Of that total, 26% is for personal use and 57% is for industrial use. How many more gallons of water each day is consumed for industrial use over personal use?
| 14,499 | |
| 6,750 | |
| 6,000 | |
| 9,300 |
57% of the water consumption is industrial use and 26% is personal use so (57% - 26%) = 31% more water is used for industrial purposes. 30,000 gallons are consumed daily so industry consumes \( \frac{31}{100} \) x 30,000 gallons = 9,300 gallons.
If there were a total of 450 raffle tickets sold and you bought 31 tickets, what's the probability that you'll win the raffle?
| 9% | |
| 11% | |
| 4% | |
| 7% |
You have 31 out of the total of 450 raffle tickets sold so you have a (\( \frac{31}{450} \)) x 100 = \( \frac{31 \times 100}{450} \) = \( \frac{3100}{450} \) = 7% chance to win the raffle.
4! = ?
3 x 2 x 1 |
|
5 x 4 x 3 x 2 x 1 |
|
4 x 3 |
|
4 x 3 x 2 x 1 |
A factorial has the form n! and is the product of the integer (n) and all the positive integers below it. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.
What is \( \sqrt{\frac{49}{9}} \)?
| 2\(\frac{1}{3}\) | |
| \(\frac{4}{5}\) | |
| 1\(\frac{1}{8}\) | |
| 1 |
To take the square root of a fraction, break the fraction into two separate roots then calculate the square root of the numerator and denominator separately:
\( \sqrt{\frac{49}{9}} \)
\( \frac{\sqrt{49}}{\sqrt{9}} \)
\( \frac{\sqrt{7^2}}{\sqrt{3^2}} \)
\( \frac{7}{3} \)
2\(\frac{1}{3}\)
Find the average of the following numbers: 10, 8, 13, 5.
| 7 | |
| 11 | |
| 9 | |
| 10 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{10 + 8 + 13 + 5}{4} \) = \( \frac{36}{4} \) = 9