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Mathematics, 23.01.2020 02:31 mprjug6

In 1991, an american, ann trason, set a world record by running 1000 km in 7 hours, 50 minutes, and 9 seconds. which is the best estimate of her average speed? (hint: think rate)
a. 12 km per hr
b. 14 km per hr
c. 18 km per hr
d. 16 km per hr

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