The formula of a slope:

We have the points (2, 5) and (4, 10). Substitute:

This means that 2.5mm of rain falls every hour
Answer:

Step-by-step explanation:
To find the required probability,
We can split the 40 years of Eric into very small pieces of time dt. Now, If Eric dies at time t and Gary dies before Eric, the probability is :

Hence the probability that Gary dies first is given by :

Answer:
21120
Step-by-step explanation:Because you take 5280 and multiply it by 4