A sample of rock is found to contain 100 grams of a parent isotope. How many grams of the parent isotope will remain after two h
2 answers:
Answer:
Option D - 25
Step-by-step explanation:
Given : A sample of rock is found to contain 100 grams of a parent isotope.
To find : How many grams of the parent isotope will remain after two half-lives.
Solution : A sample of rocks contain parent isotope = 100 gram
After one half life of the parent isotope i.e. divided by 2
After two half lives of the parent isotope means again divide one-half life by 2
Which means 25 gram of the parent isotope will remain after two half lives.
Therefore, Option D is correct -25
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Answer:
1 $16.50
2 $28.50
3 $40.50
$4.50 + $12c
$100.50
Step-by-step explanation:
Please find attached the complete question
Total cost in dollars = fixed cost + (variable cost x number of CDs bought)
fixed cost = $4.50
variable cost = $12
number of cds bought = c
total cost in dollars = $4.50 + $12c
total cost in dollars when 1 cd is bought = $4.50 + $12(1) = $16.50
total cost in dollars when 2 cds are bought = $4.50 + $12(2) = $28.50
total cost in dollars when 3 cds are bought = $4.50 + $12(3) = $40.50
total cost in dollars when 8 cds are bought = $4.50 + $12(8) = $100.50
