A rectangular shaped park contains two gardens of multi-colored roses. Sidewalks enclose the whole park and each of the gardens.
What is the total
length of the sidewalks that surround these two gardens?
30 meters
20 meters
24 meters
20 meters
A.
134 meters
B
148 meters
C.
94 meters
х
D
144 meters
length of the sidewalks that surround these two gardens?
30 meters
20 meters
24 meters
20 meters
A.
134 meters
B
148 meters
C.
94 meters
х
D
144 meters
1 answer:
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Answer:
d = 4
Step-by-step explanation:
The n th term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Given a₁ = - 2 and a₈ = 26 , then
- 2 + 7d = 26 ( add 2 to both sides (
7d = 28 ( divide both sides by 7 )
d = 4