Step-by-step explanation:
3/5 are done, that means 2/5 are still to do.
that means these 30 km are these 2/5.
2/5 x = 30
2x = 150
x = 75
the total distance is 75 km.
I hope this helps you
log6 [x. (2x-7)]=log6 (6^2)
x. (2x-7)=36
2x^2-14x-36=0
2x +4
x -9
(2x+4)(x-9)=0
x= -2
x=9
Answer:
-6 and -7
Step-by-step explanation:
Sorry if its wrong
1hr=60mins
1min=60seconds
1hour=60*60=3600seconds
ratio and proportaion
distance/time=distance/time
39/7=x/3600
times both sides by (7*3600)
140400=7x
divide both sides by 7
20057 and 1/7=x
answer is 20057 and 1/7 meters per hour
or
20.0571428km per hour
Answer:
i think it's 557/100, but i'm not sure that is its simplest form