3. If the geometric mean of a and 25 is 20,
find the value of a.
1 answer:
Answer:
Value of a is 16.
Step-by-step explanation:
Solution Given:
we know that
Geometric mean=
By using this formula
20=
20=5
dividing both side by 5, we get
20/5=5/5*
4=
squaring both side
4²=a
:. a=16
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Hope this helps :)