Answer:
C. 7 hours
Step-by-step explanation:
Let the time for the trip out be represented by t. Then the time for the return trip is t-1. The distance was the same for both trips, so we have ...
distance = speed × time
300t = 350(t -1)
300t = 350t -350 . . . . eliminate parentheses
350 = 50t . . . . . . . . . . add 350-300t
7 = t . . . . . . divide by 50
The trip out took 7 hours.
Answer:
16
Step-by-step explanation:
because juan is spend 28 on gift and he added a 16 .
Perimeter= X + Y + W. Perimeter is the sum of all sides
Try this solution:
1. according to the condition

2. for more details see the attached graph.
Answer: [0;+oo)