In 1 hour and 20 min,Sean will walk 4 miles
X+2y=23
X=-2y +23
Plug this in for x in the second equation
5(-2y + 23) + 10y = 55
-10y + 115 + 10y = 55
The -10y + 10y cancel out, so there is no solution
Hope this helps!
7/20 is already in the simplest form!
A > B, A is greater than B
When a company makes 50 deliveries in 5 days, we can first determine the amount of deliveries in 1 day. This is 50 packages / 5 days = 10 packages per day. Hence, the company delivers 10 packages a day.
400 deliveries will therefore take them:
400 packages / 10 packages a day = 40 days
Hence, the anser is 40 days.