You deposit $ 1200 in an account. The annual interest rate is 3%. How long will it take you to earn $108 in simple interest?
1 answer:
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Answer:
A
Step-by-step explanation:
Your friendly local graphing calculator or spreadsheet can tell you the quadratic regression equation. It best matches choice A.
Answer : The substances half life in days is, 5.6 days.
Step-by-step explanation :
Half life : It is defined as the amount of time taken by a radioactive material to decay to half of its original value.
All radioactive decays follow first order kinetics.
The relation between the half-life and rate constant is:
where,
k = rate constant = 0.1235 per days
= half-life
Now put all the given values in the above formula, we get:
Thus, the substances half life in days is, 5.6 days.
Answer: $750
Step-by-step explanation:
So we know that he earns $25 per hour, and we want to know how much he earns if he worked for 30 hours which is a week.
25=1
?=30
then we can cross multiply which is
=750
so the answer is John earns $750 a week.