Question

решите неравенства
1)х/4>10
2)8-1/2y>8
3)0,5-10z<1

Answer 1

x/4>10
x>10*4
x>40
(40;+∞)

8-1/2y>8
-1/2y>8-8
-1/2y>0
y<0:(-1/2)
y<0
(-∞;0)

0.5-10z<1
-10z<1-0.5
-10z<0.5
z>0.5:(-10)
z>-0.05
(-0.05;+∞)