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christinewilliams
 one year ago
given the terms a1 = 5 and a 4= 14 of an arithmetic sequence what is a20
christinewilliams
 one year ago
given the terms a1 = 5 and a 4= 14 of an arithmetic sequence what is a20

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ghazi
 one year ago
Best ResponseYou've already chosen the best response.1\[T _{20}=a _{1}+(n1)d\] we need d

ghazi
 one year ago
Best ResponseYou've already chosen the best response.1now, \[a _{4}=a _{1}+(n1)d, a _{4}=5+(41)d, 14=5+(3)d\] find d and you will have T 20 :)

christinewilliams
 one year ago
Best ResponseYou've already chosen the best response.1wait..... it is multiple choice it could be 62, 65,171, 185

ghazi
 one year ago
Best ResponseYou've already chosen the best response.1well calculate it :) your d=3 i guess then put d in the equation and find it :)

christinewilliams
 one year ago
Best ResponseYou've already chosen the best response.1wait what?? so t20=5+(19)3

christinewilliams
 one year ago
Best ResponseYou've already chosen the best response.1awesome thank you!!! can you help me with more!!! i am so behind in my math class!

ghazi
 one year ago
Best ResponseYou've already chosen the best response.1keep posting :) don't follow up
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