18+62= 80
12+4= 16
80 - 16= 64
M ( - 2 ; 2 )
N ( 2 ; 10 )
y = kx + b
2 = - 2k + b
10 = 2k + b
12 = 2b
b = 6
10 = 2k + 6
2k = 4
k = 2
Ответ у = 2х + 6
163+37x+18x = 163+55 хпри x=3 163 + 3 Х 55=163+ 165=328<span>при x=10 163 + 10 Х 55=163+550= 713</span>
(720-t*6):9=60
720-t*6=60*9
720-t*6=540
-6t=540-720
-6t=-180
t=180:6
t=30