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We know that
one day is equal to
so
% of the day is equal to
the answer is
one day is equal to
so
the answer is
About 92 days are taken for 90 % of the material to <em>decay</em>.
The mass of radioisotopes (), measured in milligrams, decreases exponentially in time (
), measured in days. The model that represents such decrease is described below:
(1)
Where:
- Initial mass, in milligrams.
- Current mass, in milligrams.
- Time constant, in days.
In addition, the time constant is defined in terms of half-life (), in days:
(2)
If we know that ,
and
, then the time required for decaying is:
About 92 days are taken for 90 % of the material to <em>decay</em>.
We kindly invite to check this question on half-life: brainly.com/question/24710827
Let last year product be x boxes.
110% of x means
.
Thus, we solve the equation:
.
Multiplying both sides by
, we have:
.
Answer: Last <span>year's annual production was 650,000 boxes.</span>
110% of x means
Thus, we solve the equation:
Multiplying both sides by
Answer: Last <span>year's annual production was 650,000 boxes.</span>