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Question 17 and 18 plz show ALL STEPS and HELP ME ASAP

Question 17 And 18 Plz Show ALL STEPS And HELP ME ASAP class=

Sagot :

Answer:

17) 750/9 and 18) 364

Step-by-step explanation:

17. Summation of 75*(0.1)^i from i=0 to infinity, that is equal to 75*(Summation of (0.1)^i). Summation of (0.1)^I is a geometric series with a sum of 1/(0.9)=10/9. Hence the series have a sum equal to 75*(10/9)=750/9

18) It's a series with sum=1+3+9+27+81+243=364

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