Answer:
7x - 5 = 11
Step-by-step explanation:
To solve for x, substitute y = -5 into the equation 7x + y = 11.
This becomes 7x + (-5) = 11 or 7x - 5 = 11.
Answer:
5 people are Barefoot
Step-by-step explanation:
6+4= 10. This is the amount of people who have at least something on their feet
10-3=7. The 3 must be subtracted because it is already included in the people who have something on their feet
12-7+5. Because why not?
Answer:
yes
Step-by-step explanation:
Answer:


Step-by-step explanation:
If the rate is x, then the rate of the return is x+25. In both trips, he has 40 miles to travel, therefore, it will take 40/x hours in the first trip and 40/x+25 for the return. As a consecuence

Also,

This means that if he starts at 30 miles per hour, it will take a bit more than 1 hour to be there: 1 hour and 20 minutes in the first trip, and a bit more than 40 minutes (40/55 hours) in the return.