Final answer:
Mario Andretti's average speed during his 1969 Indianapolis 500-mile race was 156.7 mph, calculated by dividing the 500 miles distance by the time of 3.19 hours and rounding to the nearest tenth.
Step-by-step explanation:
The student has asked about calculating the average speed of Mario Andretti when he won the Indianapolis 500-mile race in 1969. To find his average speed, we use the formula: speed = distance / time. Andretti completed a 500-mile race in 3.19 hours.
Let's perform the calculation: Average speed = 500 miles / 3.19 hours = 156.739 miles per hour (rounded to three decimal places). To round to the nearest tenth, the average speed was 156.7 mph.
Therefore, Mario Andretti's average speed during his 1969 Indianapolis 500-mile race victory was 156.7 mph.