The first term of an arithmetic sequence is equal to 200 and the common difference is equal to -10. Find the value of the 20th term
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Step-by-step explanation:
a = 200
d = -10
tn = a + (n - 1) d
t₂₀ = 200 + (20 - 1) -10
t₂₀ = 200 + (19) -10
t₂₀ = 200 - 190
t₂₀ = 10
The 20th term of the AP is 10
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