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:
(4 x 3) x 2=
=12 x 2
=24
Step-by-step explanation:
Step-by-step explanation:
yes the are similar because of AA Theorem
EAB is similar to ECD
Try photo math or google it. Best luck!
That would be 3/8
Because 1/8 = 12.5 %