A/2=b/3
b/a
a=2/3b
b=3/2a
4b/9a
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Answer:
495
Step-by-step explanation:
In order to find the sum of the first 18 terms you have to find the 18th term and the first term using the equation given.
a1=3(1)-1 a1=2
a18=3(18)-1 a18= 53
Then plug in 53 for an, 18 for n, and 2 in for a1 in the sum equation: Sn=n/2(a1+an)
Sn=18/2(2+53) Solve for sn= 495
C since that's the only triangle where A^2+B^2=C^2 (36+64=100).
Answer:
1
Step-by-step explanation:
