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Valentin [98]
3 years ago
6

If the sum of four consecutive numbers is n, what is the first one?

Mathematics
1 answer:
Over [174]3 years ago
6 0

Answer:

the first one, x, is (n-6)/4

Step-by-step explanation:

x+(x+1)+(x+2)+(x+3)=n

4x+6=n

4x=n-6

x=(n-6)/4

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I'd start by identifying possible integer factors of both 80 and 32:
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32:  {1, 2,4, 8, 16, 32}

Working backwards, we see that the first factor that is represented in both lists is 16.  Is 80 evenly divisible by 16?  Yes; the quotient is 5.
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Explanation:
The formula for calculating the percent change in a value between two points in time is:
p
=
N
−
O
O
⋅
100
Where:
p
is the percent change - what we are solving for in this problem.
N
is the New Value - 62 inches in this problem.
O
is the Old Value - 56 inches in this problem.
Substituting and solving for
p
gives:
p
=
62
−
56
56
⋅
100
p
=
6
56
⋅
100
p
=
600
56
p
=
10.7
rounded to the nearest tenth.
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