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If tn is 2n+3 find t7 t30 and s10​

User Gumption
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1 Answer

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Answer: t₇ = 17 t₃₀ = 63 S₁₀ = 140

Explanation:

t₇ = 2(7) + 3

= 14 + 3

= 17

t₃₀ = 2(30) + 3

= 60 + 3

= 63

S₁₀ = (t₁ + t₁₀)/2 × 10

= (5 + 23)/2 × 10

= 28/2 10

= 14 × 10

= 140

User Soufiane Hassou
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