The distance, d, that a train can travel is found by multiplying the rate of speed, r, by the amount of time that it is travelling, t, or d=rt. Solve this formula fort to find the amount of time the train will travel given a specific distance and rate of speed. • d = rt How long will it take Ricky to travel 720 miles at an average speed of 65 mph?​

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec