Ответы: 1
Милена Стрельникова
2017-11-15 04:04
1) Находим коэффициент пропорциональности. k = 42 :7 = 6 a = 2*6 = 12, b =15*6 = 90 2) k = 42 :6 = 7 a =5*7 = 35, b = 8*7 =54 3) k = 42 : 1.2 = 35 a = 1.1 935 = 38.5, b = 4.8*35 = 168 4) k = 30 a = 0.12*30 = 36, b = 0.33*30 = 9.9