19 = x + (x-4) + (x-4)
19 = 3x -8
27 = 3x
x = 9
So the sides are:
9, 5 and 5
2.62 is the answer but there’s actually way more numbers than that
Answer:
see explanation
Step-by-step explanation:
The n th term ( explicit formula ) of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Given a₁₂ = - 95 and a₃₇ = - 270 , then
a₁ + 11d = - 95 → (1)
a₁ + 36d = - 270 → (2)
Subtract (1) from (2) term by term to eliminate a₁
25d = - 175 ( divide both sides by 25 )
d = - 7
Substitute d = - 7 into (1) and solve for a₁
a₁ + 11(- 7) = - 95
a₁ - 77 = - 95 ( add 77 to both sides )
a₁ = - 18 , thus
= - 18 - 7(n - 1) = - 18 - 7n + 7 = - 7n - 11
= - 7n - 11 ← explicit formula
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The recursive formula allows a term in the sequence to be found by adding the common difference d to the previous term, thus
= - 7 with a₁ = - 18 ← recursive formula
Answer:
28 miles
Step-by-step explanation:
The shortest distance Jill can travel is 28 miles. She goes to the post office, back to her house, up to the city hall, to the grocery store, back to the city hall and eventually back to her house.