• Matéria: Matemática
  • Autor: maysalm
  • Perguntado 8 anos atrás

supondo quem em 2013, um determinado cometa tinha passado pela terra. Se esse cometa faz uma passagem pela terra a cada 34 anos, então quantas vezes ele teria passado pela terra de 1500 até 2013?

Respostas

respondido por: wellingtonsilvsa
0
COMO    a1 = 2013     e r = -34     então o termo geral será  an=a1+(n-1).r=> donde resulta:

 1500=2013 + (n-1) .(-34)=>1500-2013=(n-1).(-34)->-513 =(n-1 ).(-34)=>-513/-34=n-1=>


15,08823529 = n-1 => 15,08823529 + 1 =n=>16,08823529= n    logo  n=   16

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