924.
1)a=1.5
b=10
6a+5b>49
6a=1.5*6=9
5b=50
6a+5b=59 ⇒6a+5b>49
2)80a-3b>89
80a=80*1.5=120
3b=3*10=30
80a-3b=120-30=90⇒80a-3b>89
3)a*b+4.4>19.38
a*b=1.5*10=15
a*b+4.4=15+4.4=19.4⇒a*b+4.4>19.38
4)4a+b^2>105.02
4a=1.5*4=6
b^2=b*b=10*10=100
4a+b^2=100+6=106⇒4a+b^2>105.02
925.
1)0.89c-2d<13d-14.11<br>0.89c+14.11c<13d+2d<br>15c<15d<br>c2)x+8y<4x+5y<br>x-4x< -8y+5y
-3x< -3y
x>y
3)6/7n-6>m-1/7m-6
6/7n> 6/7m
n>m
4)1.2s+5.1t>2s+4.3t
1.2s-2s> -5.1t+4.3t
-0.8s> -0.8t
s