anonymous
  • anonymous
Need help with one quick question. http://puu.sh/k6RWj/9cc0e86d9b.png
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
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texaschic101
  • texaschic101
what you have here is an arithmetic sequence. That just means you have to add the same number to get to the next number. If you will notice, the first figure has 3 line segments....the 2nd has 6....the 3rd has 9...so basically, you are adding 3 to every number to find the next number. Now we are going to use this formula : an = a1 + (n - 1)* d a1 = first term = 3 d = common difference = 3 n = the number of the term you want to find = 20 now we sub a20 = 3 + (20 - 1) * 3 a20 = 3 + 19*3 a20 = 3 + 57 a20 = 60 so your 20th term has 60 line segments

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