To multiply fractions, multiply the numerators together and then multiply the denominators together:

\( \frac{1}{7} \) x \( \frac{2}{6} \) = \( \frac{1 x 2}{7 x 6} \) = \( \frac{2}{42} \) = \(\frac{1}{21}\)

To find the average of these 4 numbers add them together then divide by 4:

\( \frac{11 + 9 + 12 + 8}{4} \) = \( \frac{40}{4} \) = 10

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 + 20.5km + 5.8km
total distance = 26.7km

The factors of a number are all positive integers that divide evenly into the number. The factors of 40 are 1, 2, 4, 5, 8, 10, 20, 40.

If the tiger has consumed 45 pounds of food in 9 days that's \( \frac{45}{9} \) = 5 pounds of food per day. The tiger needs to consume 75 - 45 = 30 more pounds of food to reach 75 pounds total. At 5 pounds of food per day that's \( \frac{30}{5} \) = 6 more days.