Answer:
The correct answer is:
Between 600 and 700 years (B)
Step-by-step explanation:
At a constant decay rate, the half-life of a radioactive substance is the time taken for the substance to decay to half of its original mass. The formula for radioactive exponential decay is given by:

First, let us calculate the decay constant (k)

Next, let us calculate the half-life as follows:

Therefore the half-life is between 600 and 700 years
Well first of what sign is in between the 3x and 81
Answer: Law of syllogism
Step-by-step explanation:
Law of Syllogism is described as
- a logical reasoning by using transitivity.
- a valid argument that applies deductive reasoning to get the final statement.
- it is similar to transitive property that if a=b and b=c then a=c.
So if p, q and r were three statements such that p → q and q → r then p → r, this is called <u>law of syllogism</u>.
For example: When Rita gets internet Shamy gets internet. When Shamy gets internet Raj gets internet.
By law of syllogism : When Rita gets internet Raj gets internet.
1/3 ⇒ 4/12
1/4 ⇒ 3/12
3/12 + 4/12 = 7/12
You cannot put this as a mixed number