Question

determine o 40 termo da PA(2,13,24,35...


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Answer 1

Resposta:

Explicação passo-a-passo:

$a_1=2\\r=13-2=11\\n=40\\a_4_0=?\\\\a_n=a_1+r.(n-1)\\\\a_4_0=2+11.(40-1)\\\\a_4_0=2+11.39\\\\a_4_0=2+429\\\\a_4_0=431$

Answer 2

an= a1 + (n - 1) • r

• an= ?
• a1= 2
• n= 40
• r= 13 - 2 = 11

a40= 2 + (40 - 1) • 11

a40= 2 + 39 • 11

a40= 2 + 429

a40= 431