Answer: The answer is - 1.
Step-by-step explanation: We are given to find the value of the given expression
We know that 'i' is an imaginary unit and its value is √-1. So, we have
Therefore, the given expression becomes
.
Thus, the answer is - 1.
A city that had 40,000 trees started losing them at a rate of 10 percent per year because of urbanization.
1 answer:
Answer:
t = 13.1576 years
Step-by-step explanation:
The situation can be modeled as
P = Po.(1-r)^t
Where
t is the years transcurred
Po is the initial amount
r is the rate of change
Po = 40000
r = 10% equivalent to 0.1
Now
A quarter of the original amount
(1/4)*Po = Po.(1-r)^t
(1/4) = (0.9)^t
t = 13.1576
Please, see attached picture
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Step-by-step explanation:
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