emmettderp
emmettderp
04-07-2017
Mathematics
contestada
i need help with 14 and 15
Respuesta :
mreijepatmat
mreijepatmat
04-07-2017
14) -5(x+1)>20;
-5x-5>20;
-5x>20+5;
-5x>25 ;
-x>5
& x< - 5
15-1) 2.5+y < 7.5
y< 7.5 - 2.5
y<5 (answer c)
15-2) y/18<1/6 (cross multiplication):
6y<18
y < 3 (answer d)
15-3) y-1.5> - 0.5
y> - 0.5 +1.5
y> 1 (answer b)
15-4) -1.5y<4.5
- y < 4.5/1.5
- y< 3
y> -3 (answer a)
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