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yan [13]
3 years ago
6

in 1996,Donovan Bailey of Canada ran the 100 meter dash in 9.84 seconds.How fastis that to the nearst second?to the nearst tenth

of a second
Mathematics
1 answer:
Fofino [41]3 years ago
7 0
I think that you round to 9.80 seconds. Pardon me, I didn't understand the problem well
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Step-by-step explanation:

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the general solution for such a quadratic equation is

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the negative solution for time is but useful here (it would be the time calculated back to ground at the start).

so, x2 is our solution.

the rocket hits the ground after about 5.09 seconds.

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