Answer:

Step-by-step explanation:
The time constant of the element X is:


The decay function has the following form:




Answer:
5027 square centimeters (cm2)
Step-by-step explanation:
(5,4)
x=5
y=4
hope this helped
mark brainliest :)
you question did not make sense so i assumed this is what you meant and needed.
Answer:
I think its 12.56
Step-by-step explanation:
Multiply 4 and 3.14(thats pi)