Let the speed for the first 12 mi be x mi/h, the speed for 18 mi was (x+4) mi/h
thus given that
time=distance/speed
the average time will be:
3=(12+18)/(x+x+4)
3=30/(2x+4)
solving for x we get
3(2x+4)=30
6x+6=30
6x=24
x=4 mi/hr
Answer: 12 mi/hr
Answer:
96
Step-by-step explanation:
3*6=18*2=36
6*10=60*2=120
10*3=30*2=60
36+60+120=
216
Answer:
b I guess
Step-by-step explanation:
I just wanna get point
3(-6+2)
3(-4)
12
;( the correct
118.5/5= 23.7 so you would keep it as 23.7 because there isn't anythinh to make the 7 round up
