James ran 4 laps and walked 2 laps When running his average speed was 2.5 minutes per lap When walking his average speed was 4.9
1 answer:
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Answer:
a = 3
Step-by-step explanation:
First start writing out the binomial expansion of
as you can see from this, the last bracket will produce our term
Hope this helps, let me know if you have any questions :)