Answer:
A. they do not intersect and they lie on the same plane.
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Answer:
none
Explanation:
all i could see was blue sky
Well a cinder cone volcano doesn't have a top. It was a funnel like shape most likely caused by the volcano violently erupts.
Composite volcanoes do have a point that is made up of past eruptions
I just answered this an the correct answer is B the study of people and their environments <span />
Set this up as
10 = 40 (1/2)t/28
and solve for t in years.
10/40 = (1/2)t/28
log(0.25) = (t/28) log(0.5)
t = 28 log(0.25) / log(0.5) years = 56 years
Test the answer:
56 years = 2(28 years) = 2 half-lives, so the remaining amount should be 1/2 of 1/2 of the initial amount, i.e. 1/4 of the initial amount, and 10 mg = 1/4 of 40 mg.