Question

Solve 3 problems plzzzz

Answer 1

$\rule{300}{2}$

$\huge\boxed{Answer:}$

$mean = \frac{sum \: of \: all \: data}{number \: of \: data}$

$15 = \frac{10 + 12 + 18 + 13 + x + 17}{6}$

$90 = 70 + x$

$x = 20$

$\rule{300}{2}$