Question

ayudaaaaaaaaaa por faaaaaaaa

Answer 1

Respuesta:

Explicación paso a paso:

Solución:

$a_{n} = 3n+5$

$a_{1} = 3(1) + 5 = 3+5 = 8$

$a_{2} = 3(2)+5 = 6+5 = 11$

Razón:

$d = a_{2} -a_{1} = 11-8 = 3$

$d = 3$

RESPUESTA:

        $3$

_______________________________________________________

$n=4$

$a_{1} = 6$

$a_{n} = 18$

Buscamos la razón de la P.A

$a_{n} = a_{1} + (n-1 ) * d$

$a_{4} = 6 + ( 4-1 ) * d$

$18 = 6 + (3) d$

$18-6 = 3d$

$12 = 3d$

$\frac{12}{3} = d$

$4 = d$

$a_{1} = 6$

$a_{2} = a_{1} +d = 6 +4 = 10$

$a_{3} = a_{2} +d = 10+4 = 14$

$a_{4} = a_{3 }+d = 14+4 = 18$

RESPUESTA:

   $10$   $y$     $14$