Answer:
12
Step-by-step explanation:
Negative five is in fact a rational number.
Rational numbers can either be negative or positive. An irrational number would be pi (3.14159 etc.)
x = 9
FGH = 5x-3 = 42°
HGI = FGH = 42°
FGI = 42+42= 84°
5x - 3 = 6x - 11
z≤5
14≥4z-6
20≥4z