HELP math homework!?

4 ⤊

HELP math homework!?

I got 5 mins left ppl!! Can anyone answer this?! Fast!

A runner has ran 2000m in 4 mins 12 secs. Find his average rate in miles per hour.

2007-02-05 12:29:22 · 3 answers · asked by Miss Thang 2 in Science & Mathematics ➔ Mathematics

3 answers

1 mile = 1600 m => # miles = 2000 / 1600 = 1.25 mi.
Time is 4*60 + 12 = 252 sec = 252/3600 hr.
Average speed is 1.25 / (252/3600) = 17.9 mph (to 1 d.p.)

2007-02-05 12:33:40 · answer #1 · answered by Scarlet Manuka 7 · 1⤊ 0⤋

2000 * 1mi/1600m divided by (4*60+12)

2007-02-05 12:33:21 · answer #2 · answered by triggerfish05 1 · 0⤊ 0⤋

2000m in 4:12=7.9365 m/s=17.753mph
i deserve a star for that!
you're welcome!

2007-02-05 12:35:40 · answer #3 · answered by snake_hunter469 2 · 3⤊ 0⤋