Question

calcule o 10° termo da PA (30,37,44)
passo a passo
não estou conseguindo faltei a aula :(

Answer 1

a1 = 30
razão r = 37 - 30 = 7

Termo geral: an = a1 + (n-1).r

a10 = a1 + (10 -1).r
a10 = a1 + 9.r
a10 = 30 + 9.7
a10 = 30 + 63
a10 = 93

Resposta: 10º termo igual a 93

Espero ter ajudado.

Answer 2

$PA~\{30, 37, 44, ...\}\\\\\\ a_1~(1\° ~~termo)=30\\\\ raz\~ao=44-37=7~~~~ou~~~~37-30=7,~~logo~~r=7\\\\ n\° ~~de~~termos\to~~ n=10~~ (pois~~quer~~saber~~o ~~10\°)\\\\ a_n=a_{10}=?~~\to~~~10\° ~~que~~vai~~procurar\\\\\\ a_n=a_1+(n-1)\times r \\\\\\ Decore~~ essa ~~formula, ~~sabendo~~dela,~~vai~~matar~~todas~~em ~~PA.\\\\ \\ a_{10}=30+(10-1)\times 7\to\\\\ a_{10}=30+9\times 7\to\\\\ a_{10}=30+63\to\\\\ \boxed{a_{10}=93}\\\\\\\\ Simples ~~assim...$



$PA~\{30, 37, 44, 51, 58, 65, 72, 79, 86, 93\}$