| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.18 |
| Score | 0% | 64% |
What is \( \frac{1}{8} \) ÷ \( \frac{4}{8} \)?
| \(\frac{16}{63}\) | |
| 2 | |
| \(\frac{1}{27}\) | |
| \(\frac{1}{4}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{1}{8} \) ÷ \( \frac{4}{8} \) = \( \frac{1}{8} \) x \( \frac{8}{4} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{1}{8} \) x \( \frac{8}{4} \) = \( \frac{1 x 8}{8 x 4} \) = \( \frac{8}{32} \) = \(\frac{1}{4}\)
The total water usage for a city is 35,000 gallons each day. Of that total, 19% is for personal use and 34% is for industrial use. How many more gallons of water each day is consumed for industrial use over personal use?
| 5,250 | |
| 10,800 | |
| 7,200 | |
| 7,249 |
34% of the water consumption is industrial use and 19% is personal use so (34% - 19%) = 15% more water is used for industrial purposes. 35,000 gallons are consumed daily so industry consumes \( \frac{15}{100} \) x 35,000 gallons = 5,250 gallons.
Solve 2 + (2 + 4) ÷ 3 x 4 - 32
| \(\frac{2}{3}\) | |
| 1\(\frac{3}{4}\) | |
| 1 | |
| \(\frac{3}{8}\) |
Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):
2 + (2 + 4) ÷ 3 x 4 - 32
P: 2 + (6) ÷ 3 x 4 - 32
E: 2 + 6 ÷ 3 x 4 - 9
MD: 2 + \( \frac{6}{3} \) x 4 - 9
MD: 2 + \( \frac{24}{3} \) - 9
AS: \( \frac{6}{3} \) + \( \frac{24}{3} \) - 9
AS: \( \frac{30}{3} \) - 9
AS: \( \frac{30 - 27}{3} \)
\( \frac{3}{3} \)
1
A triathlon course includes a 400m swim, a 50.2km bike ride, and a 15.0km run. What is the total length of the race course?
| 62.9km | |
| 53.2km | |
| 63km | |
| 65.6km |
To add these distances, they must share the same unit so first you need to first convert the swim distance from meters (m) to kilometers (km) before adding it to the bike and run distances which are already in km. To convert 400 meters to kilometers, divide the distance by 1000 to get 0.4km then add the remaining distances:
total distance = swim + bike + run
total distance = 0.4km + 50.2km + 15.0km
total distance = 65.6km
What is \( \frac{14\sqrt{16}}{7\sqrt{4}} \)?
| \(\frac{1}{2}\) \( \sqrt{4} \) | |
| 2 \( \sqrt{\frac{1}{4}} \) | |
| 2 \( \sqrt{4} \) | |
| 4 \( \sqrt{\frac{1}{2}} \) |
To divide terms with radicals, divide the coefficients and radicands separately:
\( \frac{14\sqrt{16}}{7\sqrt{4}} \)
\( \frac{14}{7} \) \( \sqrt{\frac{16}{4}} \)
2 \( \sqrt{4} \)