1. Sally's average speed is 35.38 miles/hr. She deserves no ticket
2. The 20.0 ft tall building is 6096 mm tall.
For the first problem, recall that: speed = distance/time.
The distance covered by Sally is 97 km within 102 minutes.
1 km = 0.62 miles
97 km = 0.62 x 97
= 60.14 miles
60 minutes = 1 hr
102 minutes = 102/60
= 1.7 hours
The average speed of Sally can be calculated as:
60.14/1.7 = 35.38 miles/hr
Since the speed limit is 65 mi/hr, this means Sally's speed is still within acceptable limits and does not deserve a ticket.
For the second problem:
1 ft = 12 inches
20 ft = 12 x 20
= 240 inches
1 inch = 2.54 cm
240 inches = 2.54 x 240
= 609.6 cm
1 cm = 10 mm
609.6 cm = 10 x 609.6
= 6096 mm
Thus, the 20.0 ft tall building is 6096 mm tall.
More on miscellaneous calculations can be found here: https://brainly.com/question/10943201
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