Use the following ( a,b and c are the lengths of the 3 sides with a the longest side):-
If its acute then a^2 < b^2 + c^2
Answer:
5.1 days
Step-by-step explanation:
Given in the question,
initial amount of substance = 34 grams
k-value = 0.137
To find the half life of this substance we will use following formula

here N(0) is initial amount of substance
t is time in days
Plug values in the formula

1/2 = e^{-0.137t}
Take logarithm on both sides
ln(1/2) = ln( e^{-0.137t})
ln(1/2) = -0.137t
t = ln(1/2) / -0.137
t = 5.059
t ≈ 5.1 days (nearest to tenths)
Speed of the train : distance traveled / time of the travel = 10.1/(0.5)=20.2 mph
Answer:
if there are answer choices i would put the closest one to 16
The radius of the circle is 81.78