Answer:
radius=2
Step-by-step explanation:
if the circumference=4pi and the formula is 2pir then r must be 2 and would look like this:
C = 2pir
C = 2pi2
C = 2*2pi
C = 4pi
Answer:
The answer should be 8q-6 i think i tried
Step-by-step explanation:
Answer: ![f(t) = 4000000000( 1 .019)^t](https://tex.z-dn.net/?f=f%28t%29%20%3D%204000000000%28%201%20.019%29%5Et)
Step-by-step explanation:
Here, According to the question, The population of the world is 4 billion (approx).
Again According to the question, The world's population has grown at an average rate of 1.9 percent per year since 1945.
Therefore, after 1975 the growth rate will remains same.
Thus, the population of the world after t years,
(By the formula
)
⇒![f(t) = 4000000000( 1.019 )^t](https://tex.z-dn.net/?f=f%28t%29%20%3D%204000000000%28%201.019%20%29%5Et)
Where 1.019 is the growth rate and 4 billion is the initial population.
Answer: 5x+8
Step-by-step explanation: You have to combine like terms.
3x+2x=5x
5+3=8
= 5x+8