City Y is 10miles north of City X. City Z is 24 miles East of city X. How long is the straight ride connecting Y and Z

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83