iheartmath Posted January 10, 2011 Report Share Posted January 10, 2011 I've been studying for an IB math midterm and chapter 2 (arithmetic/geometric sequences) is giving me a head ache. The problems below are from my IB book so I know the answers because they are given in the back. Can anyone please please please explain to me how to work these problems? I want to ace my midterm and get an A+ this semester Your help is muchly appreciated!!!1. Find the first term of the sequence 4,4√3,12,12√3,…. which exceeds 4800.2. Find the sum of the multiples of 7 between 0 and 1003. Find the sum of the integers between 1 and 100 which are not divisible by 34. Five consecutive terms of an arithmetic sequence have a sum of 40. The product of the first, middle, and last terms is 224. Find the terms of the sequence.5. Find the sum of √7+7+7√7+49+⋯to 12 terms.6. Let S_n be the sum of an infinite geometric sequence such that S_1=3 and S_2=4 a. State the first term S_n b. Calculate S_5 Reply Link to post Share on other sites More sharing options...
dessskris Posted January 11, 2011 Report Share Posted January 11, 2011 which Math level are you taking?click on the picture to zoom in. my handwriting is ugly btw..so if you cant read it please let me know.and check my working and calculation too.any doubt don't be afraid to ask 1 Reply Link to post Share on other sites More sharing options...
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