Good luck to you! I finally figured it out. XD it took a while. I didn’t recall the algebraic approach, if any.
I think if you do 0.25 Subtract 7.5 then you will get you answer then you can multiply the answer you have with the number 0.25 and see if yo can get 7.5
Answer:x=4 y=-1/2
Step-by-step explanation:
The difference between the average speed in km/h of their trains are 53.538 km/h.
Step-by-step explanation:
The given is,
Davit's train travels 90 km in 50 minutes.
Mila's train travels 210 km. It leaves at 12:05 and arrives 13:35.
Step:1
From the given,
Time required to milas train travels 210 km
= 12:05 - 13:35
= 1.30 hours
Step:2
Time to Davit's train travels 90 km is need to convert in hours from minutes,
= 50 minutes
= hours
= 0.833 hours
Step:3
Average rate of Davits train,
=
=
= 108 km/h
Step:4
Average rate of Mila's train,
=
=
= 161.538 km/h
Step:5
The difference between the average speed of the both trains in km/h,
= 161.538 - 108
= 53.538 km/h
Result:
The difference between, the average speed of their trains are 53.538 km/h.
Answer:
The area and the perimeter of the square barn which has each side 9 meters long is 81 m² and 36 m.
Step-by-step explanation: