Bab 4 Operasi Set 11. Amalan berjimat cermat dalam kalangan remaja dipengaruhi oleh faktor keluarga, masyarakat
dan media massa. Sebanyak 80 orang remaja telah disoal selidik. Didapati 30 orang remaja
dipengaruhi oleh keluarga, 15 orang remaja dipengaruhi oleh keluarga dan masyarakat, 9 orang
remaja dipengaruhi oleh masyarakat dan media massa, 7 orang remaja hanya dipengaruhi
oleh keluarga dan 3 orang remaja dipengaruhi oleh ketiga-tiga faktor tersebut. Diberi nisbah
bilangan yang hanya dipengaruhi oleh masyarakat dan yang hanya dipengaruhi media massa
ialah 3:1. Hitung bilangan yang dipengaruhi oleh
(a) hanya kedua-dua faktor keluarga dan media massa,
(b) hanya media massa,
(c) masyarakat.

step-by-step explanation:

answer: i'm not sure

step-by-step explanation:

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is