Answer with Step-by-step explanation:
We are given that
E=Event denote the event that the individual must stop at the first light
F=Event denote the event that the individual must stop at the second light
P(E)=0.4
P(F)=0.2

a.We have to find the probability that the individual must stop at atleast one light.
We know that

Substitute the value in the given formula then, we get


b.

c.We have to find the probability that the individual must stop at exactly one of the two lights.
P(must stop at exactly one of the two lights)=
P(must stop at exactly one of the two lights)=0.3
d.We have to find the probability that the individual must stop just at the first light.
P(must stop juts at the first light)=
P(must stop juts at the first light)=0.4-0.15=0.25
Answer:
11.7 Gallons
Step-by-step explanation:
First turn the percentage into a decimal then multiply it by the whole number which is 18 and you should get 11.7 and that is how many gallons are currently in the tank
1/6 of the shingles/ 2 stacks= 1/12 of the shingles/stack.
There will be 1/12 of the shingles in each stack~
The answer for your question is 10% hope this helps you