Answer: 
Step-by-step explanation:
We know that the general form of the exponential decay formula is
, where y is final amount remaining after t time, A is the original amount and r is the rate of decay
Now, the ratio of strontium-90 remaining, p , as a function of years, t , since the nuclear accident. 
Hence, the ratio of remaining since the nuclear accident is
Answer:
A≈527.79
Step-by-step explanation:
A=2πrh+2πr2
Brainly plss
Use pemdas then youll get it way better!
The area of the triangle is 270 centimeters. The way that I found that out is the equation 30x18/2
