What cuts a line segment in half
2 answers:
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Answer:
Step-by-step explanation:
From the question we are told that:
Loudness function
Sound of a person
Number of persons talking
Generally the Relative intensity for 20 people is mathematically given by
Relative intensity for
Relative intensity for
Generally the loudness for 20 people is mathematically given by
Therefore increase in loudness X is given as
Answer:
= 1
Step-by-step explanation:
The n th term of an arithmetic progression is
= a + (n - 1)d
where a is the first term and d the common difference
use the 9 th term and 7 th term to find a and d
= a + 8d =
→ (1)
= a + 6d =
→ (2)
Subtract (2) from (1) term by term
2d = ⇒ d =
Substitute this value into (2) and solve for a
a + =
a = -
=
Hence
=
+
= 1