Answer:
a
Step-by-step explanation:
368
Assume that a step to the north is in the positive direction and a step in the south is in the negative direction.
Then,

and

After 1 hour of independent steps,

and

Therefore, by Central Limit Theorem, the distribution of the random walk is normal with a mean of 0 cm and a standard deviation of 17.32 cm. He is expected to be somewhere around his starting point after 1 hour.
This is easy. You basically round them all up. So 1.8 would turn into 2, 2.9 would turn into 3, and 5.7 would turn into 6. So now you have 2, 3, and 6. Now to calculate volume, you multiply length time width times height. So you multiply 2x3x6, and your answer is
36ft³
Hope this helps! :)
Answer:
3/16
Step-by-step explanation:
1. The number of spaces that are red is three and the total is 8, so the probablility of red is 3/8
2. The probability of tails is 1/2
3. multiply the expressions 1/2 x 3/8 = 3/16