Answer:
(3.2,6)
Step-by-step explanation:
5,3+x=8,5
-1+y=5
x=3,2
y=6
Answer:
Evaporation; when a liquid turns into a vapor
condensation; when water vapor turns into liquid
precipitation; rain, sleet, hail, snow
aquifer; an underground layer of water-bearing permeable rock. (Basically water thats underground) you can collect the groundwater with a water well.
Answer:
x = 7.8
Step-by-step explanation:
a^2 + b^2 = c^2
4^2 + 2^2 = c^2
16 + 4 = c^2
c^2 = 20
c = 4.5
a^2 + b^2 = c^2
a^2 + 4.5^2 = 9^2
a^2 + 20.25 = 81
a^2 = 81 - 20.25
a^2 = 60.75
a = 7.8
Since the standard deviation is not given, we assume the process is a Poisson process, with mean 12000 miles.
From Poisson distribution tables, we see that with a value of lambda(mean)=12000, the lower tail probability for x=12140 miles is 0.9000105, which means that the 90 percentile is 12140 miles.
The lower-tail probability of 9000 miles is 6.2*10^(-181) which is essentially zero.
NOTE: if the problem were modelled with a normal distribution, the probabilities would be completely different.