Answer:
0.02m/s
Step-by-step explanation:
s = 1 m
t = 45 sec
v = s/t = 1/45
= 0.02m/s
no idea sorry!!
i think its the third but not sure
4(4x+3)=19x+9-3x+3
4*4x 4*4 =19x+9-3x+3
16x+12= 16x+12
12=12