Answer:
the first step is to adding 4 to both sides with you will get 9. then you will dived 9 by -3 with is -3. Witch changes the symbol from grater then to equal to.
Step-by-step explanation:
hope this helps.
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:
9/22
Step-by-step explanation:
=
1
/2
−
1
/11
=
1
/2
+
−1
/11
=
11
/22
+
−2
/22
=
11+−2
/22
=
9
/22
(Decimal: 0.409091)