If 3/8 equals 3 ft, then i would assume that 5/8 equals 5 ft.
8.5x-6.1=-7.1
40x-6.1=-7.1
40x=-7.1+6.1
40x=-1
solution= x= -0.025
Frequency describes the number of waves that pass a fixed place in a given amount of time.
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:
2
Step-by-step explanation:
18/32 = 1/2