If the area of the circle is 28 in^2,what is the area of the shaded sector with 90 degree angle?
1 answer:
You might be interested in
Let's translate the words into expressions:
11 less than 7 times a number is
5 more than 6 times the number is
So we have the equation
Subtract 6x from both sides:
Add 11 to both sides:
Answer:
By 2086
Step-by-step explanation:
The provided equation is:
, where:
A=total of population after t years
A0=initial population
k= rate of growth
t= time in years
Given information:
The final population will be 15 million, then A=15.
We start in 2000 with a 5.82 million population, then A0=5.82.
Missing information:
Although k is not given, we can calculate k by using the following statement, from 2000 to 2040 (within 40 years) population is proyected to grow to 9 million, which means a passage from 5.8 to 9 million (3.2 million increament).
Then we can use the same expression to calculate k:
Now that we have k=0.011, we can find the time (t) by which population will be 15 million:
Because the starting year is 2000, and we need 86.38 years for increasing the population from 5.8 to 15 million, then by 2086 the population will be 15 million.