200 times / 3 minutes = x times / 60 minutes
3x = 12000
x = 4000 times in an hour
A person's heart will beat 4000 times in an hour.
Hope this helps!! :)
Answer: Focus, Vertex, Axis, and Directrix.
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Answer:
option A, Estimation gives an approximate answer
Answer:

Option (A) is the correct answer.
Step-by-step explanation:

Now, 

∴ 
= 
= 
= 
Therefore option (a) is the correct answer.