Three times ten plus seven times one plus three times one-tenth plus five times one-hundredth
Answer:
i forgot im not smart
Step-by-step explanation:
To solve this we are going to use the half life equation

Where:

is the initial sample

is the time in years

is the half life of the substance

is the remainder quantity after

years
From the problem we know that:



Lets replace those values in our equation to find

:




We can conclude that after 1600 years of radioactive decay, the mass of the 100-gram sample will be
91.7 grams.
The answer is a=7 because you have to do 7-6 which equals to 2 which a=7 is the right answer
The area of the side walk would be 5.5ft^2. Hope this helps