Tanya has several different ways she likes to walk home. One route takes 20 minutes, two of the routes take 30 minutes, and two
take 40 minutes.
Tanya randomly chooses a route to walk home.
What is the probability, to the nearest percent, that it will take her 30 min to walk home?
2 answers:
50% because there are 4 routes and 2 take 30 minutes, 2/4 = 50/100 = 50%
About 50% in all of the 30min
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0 = 3² +- 4(-1)c
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c = -9/-4 pr 9/-4
c = 9/4 or -9/4
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