Answer:
1) 62.5
2) 50
3) 75
4) 100
Step-by-step explanation:
1)
Because it has a half-life of 25 days, half of it will decay after 25 days.
After 
days, there will be 
of it left.
So, 
.
2)
Because it has a half-life of 25 days, half of it will decay after 25 days.
After 
days, there will be 
of it left.
So, 
3)
Because it has a half-life of 25 days, half of it will decay after 25 days.
After 
days, there will be 
of it left.
So, 
.
4)
The only answer left is 
grams. You can solve it the same way you solved the previous steps.
Answer:
=10383435
Step-by-step explanation:
However much the barber charges.
Answer:
20% of 120,000 is 24,000 so 120,000-24,000 is 96,000
Now if she pays 7.46 for every 1000 she will have to repay 716.16 over 20 years.
Step-by-step explanation:
Answer:
See below
Step-by-step explanation:
-17i ' i ' stands for 'imaginary'
<u> this is a negative imaginary number </u>
