Kilogram
decagram
gram
decigram
milligram
Answer:
A. $10.71
Step-by-step explanation:
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
Answer:
<h2>m∠1 = 93°</h2>
Step-by-step explanation:
The vertical angles have the same measure.
Therefore, if ∠1 and ∠2 are vertical angles and m∠2 = 93°, then m∠1 = 93°.
