Answer:
Simplest form=10/30=1/3
=1cm:3cm
Step-by-step explanation:
Simplest form=2cm:1m
1m=100cm
2:100
2/100=1/50
1cm:50cm
3x-4=17
3x=17+4
3x=21
x=21/3
x=7
34
-5y=-45
y=-45/-5
=9
y=9
then
5y-11=5×9-11
=45-11
=34
Velocity = Distance / Time
v = d/t
v = 180m/30s
v = 60 m/s
The average velocity 60 m/s