Answer:
natural number belongs to set N
integer belongs to set Z
rational number belongs to set Q
Answer:
me too
Step-by-step explanation:
1.) -15.9, -15.2, -3.6, 3.6
2.) second one is already correct
3.)-2.3, -2.03, 2.03, 3.0
C=number of cars
t=number of trucks
c+t=127=total
if there are 4 more than (+4) 2wice the number of trucks (2 times t or 2t) than are cars (= c) find c and t
4+2t=c and c+t=127
subsitute 4+2t for c
4+2t+t=127
4+3t=127
subtract 4
3t=123
divide 3
t=41
subsitute
t+c=127
41+c=127
subtract 41
c=86
86 cars
41 truckes