The half-life of the radioactive substance can be determined through teh equation ln 2 = k (t 1/2) where k is equal to ln (1/(1-0.58)) / 3. Hence t 1/2 is equal to 2.40 days. To decay to 10% of the original amount, ln (1/0.90) / ( ln2) / 2.40, time is equal to 0.37 days.
100 - 0.05 = 0.95
Expected monthly cost =
Monthly cost x 0.95 + office visit x 0.05
15 x 0.95 + 50 x 0.05
14.25 + 2.50 = $16.75
Answer:
4 students were missing
Step-by-step explanation:
A teacher reserved 6 sheets of colored paper for each of her 28
students do a job. As some students were missing, the teacher gave 7
sheets for each student present. How many students were missing?
6*28=168
Answer:
c
Step-by-step explanation:
Answer:
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Step-by-step explanation:
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Thanks for free points :)
