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6. you can round 287 to the nearest 10 which will be 290 so 290 times 3 equals  870

7. round 1,310 to the nearest 100th which is 1,300 so 1,300 times 6 equals 7,800

8. round 62 to the nearest  10th which equals 60 then 60 times 9 equals 540

Step-by-step explanation:

9. round 486 to the nearest 10th which is 490 so 490 times 7 equals 3430 then mark unreasonable

10. round 1,240 to the nearest 100 which will be 1,200 so then 1,200 times 5 equals 6,000 then mark unreasonable

11. round 287 to the nearest tenth which is 290 so then 290 times 5 equals 2610  

answer: the answer is 30 miles per hour.

ft/s -> mphmph = ft/s 1.466667mph = 44 divided by 1.466667mph = 30.00000

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answer: 4 (:

step-by-step explanation: