[tex]x=(1+ \frac{1}{2} +1,1(6)+1,(3))*1,5^{2}[/tex]
[tex]y=2,5:20+(\frac{1}{2}+\frac{3}{9}+\frac{1}{6})*\frac{7}{8}[/tex]
[tex]x=(1+ \frac{1}{2} +\frac{116-11}{90}+\frac{12}{9})*\frac{225}{100}[/tex]
[tex]x=(\frac{90}{90}+ \frac{45}{90} +\frac{105}{90}+\frac{120}{90})*\frac{225}{100}[/tex]
[tex]x=(\frac{90+45+105+120}{90})*\frac{225}{100}[/tex]
[tex]x=\frac{360}{90}*\frac{225}{100}[/tex]
[tex]x=\frac{4*225}{100}[/tex]
[tex]x=9[/tex]
[tex]y= \frac{25}{10*20}+( \frac{9}{18}+ \frac{6}{18}+\frac{3}{18})*\frac{7}{8}[/tex]
[tex]y= \frac{1}{8}+\frac{18}{18}*\frac{7}{8}= \frac{8}{8}=1[/tex]
a)[tex] x^{2} +y^{2015}= 81+1= 82
b) media =
[tex] \frac{9+1}{2} = 5[/tex]
