Is that british currency
or is ut a diffrent country
Answer:
i.e. 393650 kg.
Step-by-step explanation:
Given that Radium-226 is a radioactive substance with an annual decay rate of 0.04 %
Let the year 1937 be 0 year
Initially population was = 400,000 kg
Since decay rate is 0.04% per year after t years population would be
![P(t) = 400,000 (1-0.0004)^t](https://tex.z-dn.net/?f=P%28t%29%20%3D%20400%2C000%20%281-0.0004%29%5Et)
=![400,000*0.9996^t](https://tex.z-dn.net/?f=400%2C000%2A0.9996%5Et)
In 2017, t = 40 years (i.e. years lapsed form 1937)
Hence population
= ![P(40) = 400,000 (0.9996)^{40} \\=393649.66](https://tex.z-dn.net/?f=P%2840%29%20%3D%20400%2C000%20%280.9996%29%5E%7B40%7D%20%5C%5C%3D393649.66)
i.e. 393650 kg.
Answer:
4cm
Step-by-step explanation:
![\sqrt[3]{64} = 4](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B64%7D%20%20%3D%204)
The edge length is 4cm.
Answer:
7/3
Step-by-step explanation:
f(x) =7/(x+2)
g(x) = (x + 5)^2
f(g(-4))=
First find g(-4)
g(-4) = (-4+5)^2
=(1)^2 =1
Then find f(1)
f(1)= 7/(1+2)
= 7/3