Answer:
????
Step-by-step explanation:
??????.°
Answer: 104,
16,
99,
7
Step-by-step explanation:
Radiologically, half lives describe the amount of time it takes for half the amount of the radioactive substance to decay. If you had 100g of a radioactive substance with a half life of one week, in seven days, only 50g would remain, and after another week, only 25g.
Fifteen days contains three half lives since the half life is 5 days long. Divide the starting amount by 2 for each half life that passes.
600g - 300g (1 HL) - 150g (2 HL) - 75g (3 HL)
So, only 75g of Bismuth-210 would remain after 15 days.
Answer:
$9891.23
Step-by-step explanation:
The formula for future value of annuity due is:
Where,
- FV is the future value of the annuity (what we need to find)
- P is the periodic payment (here it is $400)
- r is the interest rate per period (here 13% yearly interest is actually percent per period(quarter))
- n is the number of periods (here the annuity is for years, which is periods, since quarterly and there are 4 quarters in 1 year)
Substituting all those values in the equation we get:
Hence, the future value of the annuity due is $9891.23