| 
 
 
| Question 477540:  first six terms of a1=300,d=50
 first six terms of a1=200,d=-60
 write the first five terms of geometric sequence a1=4,r=3
 find a8 when a1=5,r=3
 first five terms a1=4, r=3
 Answer by stanbon(75887)
      (Show Source): 
You can put this solution on YOUR website! Aritmetic sequence:
 first six terms of a1=300,d=50
 a1 = 300
 a2 = 300 + 50 = 350
 a3 = 350+50 = 400
 a4 = 400+50 = 450
 etc.
 ----------------------------------
 first six terms of a1=200,d=-60
 a1: 200
 a2: 200-60 = 140
 a3: 140-60 = 80
 a4: 80-60 = 20
 a5: 20-60 = -40
 a6: -40-60 = -100
 -------------------------
 write the first five terms of geometric sequence a1=4,r=3
 find a8 when a1=5,r=3
 a(8) = 5*3^7 = 10935
 ---------------------------
 first five terms a1=4, r=3
 a1 = 4
 a2 = 4*3 = 12
 a3 = 12*3 = 36
 a4 = 36*3 = 108
 a5 = 108*3 = 324
 ========================
 Cheers,
 Stan H.
 ================
 
 | 
  
 | 
 |