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jako12
30.08.2019 •
Mathematics
which is a true statement about any two congruent chords in a circle?
a. they form an angle.
b. they are perpendicular.
c. they are parallel.
d. they are equidistant from the center of the circle.
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Ответ:
In other words, they are the same distance away from the center
Ответ:
t = 15825.11 years
Step-by-step explanation:
From the given information:
We can make use of the activity of the sample present after time "t" to determine the age of the sample.
This can be expressed by the formula:
where;
If we replace the value of
into equation (1), we have:
By rearrangement:
t = 15825.11 years