The common difference is 19-7 = 31-19 = 12, so this is an arithmetic sequence. The initial term (when n=1) is 7.
The explicit formula for the terms of an arithmetic sequence is
an = a1 + d(n-1)
where "a1" is the first term and "d" is the common difference. The formula that matches a1=7 and d=12 is
B. a(n) = 7+(n-1)·12
Simply cross multiply:
18*m = 6*15
18m = 90
m = 5
The minimum cost for this spanning tree has been calculated as $1100.
<h3>How to solve for the minimum spanning tree</h3>
This is solves as
AC + CD + DF + FE + EB
This would be
15 + 25+ 23 + 22 + 25
= 110
The minimum cost would be gotten by multiplying this valus with the amount per foot
= 10 * 110
= $1100
Hence the minimum cost of the spanning tree is $1100
Read more on minimum cost here:
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Answer:
1
Step-by-step explanation:
The sides are equivalent enough to be a triangle, but only 1.
:)