Answer:
Erik's average speed exceeds the speed limit by 6.91 miles per hour.
Step-by-step explanation:
Let suppose that Erik travels at constant speed. Hence, the speed (
), measured in miles per hour, is determined by following equation of motion:
(1)
Where:
- Distance, measured in miles.
- Time, measured in hours.
Please notice that a hour equals 60 minutes. If we know that
and
, then the speed of Erik is:


Which is 6.91 miles per hour above the speed limit.
Answer:
18
Step-by-step explanation:
Answer:
x=0 and y=5
Step-by-step explanation:
8x-25+2x=-25
Answer:
7 Hours
Step-by-step explanation:
Given The lawyer charges $100 per month for a client.
Also he charges $75 per hour
Let the hours he worked for the client be x
The money the lawyer gets from the hourly charges is $75x
The total money the lawyer charged is $625
total money = monthly charges + hourly charges
625=100 + 75x
75x=525
x=525/75=7
Therefore the lawyer has to work for 7 hours to charge $625