toni45
toni45
19-06-2017
Mathematics
contestada
Need help on this one plizz help me out plizz
Respuesta :
stevemosby0
stevemosby0
19-06-2017
First you have to find the 20th term of the sequence
1.5+(19)(-0.05)=0.55
Then apply the sum formula 20/2*(1.5+0.55)=20.5
The answer is 20.5
Then use the sum formula 2
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