If the half-life is 5 minutes, then 30 minutes is equivalent to 6 half-lives. So, after six successive half-lives, the 400 mg of the radioisotope would have a mass of 400(0.5)⁶ = 6.25 mg.
Thus, A would be the correct answer choice here.
Answer:
psychology is the most specail in the history if you find this ‘‘A Book of ethics’’
The forces are strongest at or near the C) Magnetic Poles.
Answer:
2y=8-x
y-2x=-1
y-2x=-1
y = 2x-1
Substitute for y in the 1st
2(2x-1)=8-x
4x-2=8-x
5x = 10
x = 2
y=2x-1
y = 3
Explanation:
2y=8-x
y-2x=-1
------------
Rearrange:
x = 8-2y
y = 2x-1
------------
Substitute to get:
y = 2(8-2y)-1
y = 16-4y-1
5y = 15
y = 3
-------------------
Substitute to solve for "x":
x = 8-2(3)
x = 2
I believe the answer is D. Patrilineal.
In a Patrilineal system, you can only advance in social standing through being male and of kin.
At the same time, I could be wrong, who knows. But I came to my conclusion through a little research.
Hope this helps!
Cheers, July.
