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Please help me urgent!!
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Please help me urgent!!

Please help me urgent!!-example-1
User Maribeth
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Hey!


\sf \longmapsto S_( 20) = (n)/(2) * 2a + (n - 1)d \\ \\ \sf\longmapsto S_(20)= (20)/(2) * 2(2) + (20 - 1)6 \\ \\ \sf\longmapsto S_(20) = 10 \{ 4 + 114 \} \\ \\ \sf \longmapsto \boxed{\bf{S_(20) = 1180}}

Hope it helps :)

User Ali Aboussebaba
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