You did NOT list the interest rate so I can't calculate anything.
However, if you look at the attached formula,
principal = $650
n = 52
years = 8
However, if you look at the attached formula,
principal = $650
n = 52
years = 8
Nicole, Tasha, Maria, and Joan each walk to school from home. Nicole walks 1 11/12 miles. Tasha walks 2 1/12. Maria walks 1 7/12
2 answers:
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From the information given, we can see that the mass of Iodine-131 halves about every 8 days. There are 3 sets of 8 days in 24 days, so we will need to halve the mass of the sample 3 times:
50÷2=25
25÷2=12.5
12.5÷2=6.25
So after 24 days, the Iodine-131 sample will be 6.25g.
Here's a formula to figure this out, when dealing with bigger numbers:
Where
a = final amount
i = initial amount
1/2 is used because we are dealing with half lifes
t = time
h = half life of the isotope
50÷2=25
25÷2=12.5
12.5÷2=6.25
So after 24 days, the Iodine-131 sample will be 6.25g.
Here's a formula to figure this out, when dealing with bigger numbers:
Where
a = final amount
i = initial amount
1/2 is used because we are dealing with half lifes
t = time
h = half life of the isotope