Answer:
Time taken by train in onward journey = 12 hours.
Step-by-step explanation:
Given:
Speed of train making a trip to a repair = 25 mph
Speed of train on return trip = 20 mph
Time taken for return trip = 15 hours
To find the time taken on the on wards trip.
Solution:
The distance traveled by the train on the trip and return trip is the same as the y are of same trips in opposite directions.
Distance can be calculated by using the data for the return trip.
Distance= 
Distance= 
Speed of train for on ward trip = 25 mph
Time taken = 
Time taken = 
Thus, time taken by train in onward journey = 12 hours.
Answer:
$5,500 per a year
Step-by-step explanation:
there are 3 years in between 2009 and 2012, and the is a difference of $16,500 between the two years so $16,500/3= $5,500 per 1 year
Answer:
b
Step-by-step explanation:
hb<em>jbmnbbbbbbbbbbbbbbbbbbbbbbbbbbbbhbbbbbbbbbbbbbbb</em>
Answer:
Camille's puppy becuase it gains about half a pound per week
Step-by-step explanation:
Answer:
Step-by-step explanation:
The method of variable substitution is a way of solving a system of equations. It involves solving one equation for a variable and then substituting in the expression that represents the value of the solved variable into the other equation. After doing so, one can solve for the unknown variable and then backsolve for the other variable.
In this system, the second equation is already solved for (y), thus one can substitute that expression into the other equation in the system.
Now solve using inverse operations,
Backsolve to find the value of (y), substitute in the value of (x), and solve for the value of (y).
Substitute,
Solve,
Thus, the answer to this system of equations is the following, .
