Question

5) Interpole 6 meios aritméticos entre 86 e 107.
(Alguém me ajuda nessa);(

Answer 1

$\Large\boxed{\begin{array}{l}\tt dados\begin{cases}\sf a_1=86\\\sf a_8=107\\\sf r=?\end{cases}\\\sf a_8=a_1+7r\\\sf r=\dfrac{a_8-a_1}{7}\\\\\sf r=\dfrac{107-86}{7}\\\\\sf r=\dfrac{21}{7}\\\\\sf r=3\\\rm (86,\boldsymbol{89,92,95,98,101,104,}107)\end{array}}$