kkingstone1231
01.12.2020 •
Mathematics
7. Which graph represents a proportional
relationship
PLEASE HELP ME
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Ответ:
B
Step-by-step explanation:
It's a relationship
Ответ:
Brielle will run the marathon faster.
Brielle = 104.8 minutes
Joshua = 157.2 minutes
Step-by-step explanation:
Speed rate = distance /time
Brielle = 1.25 /10 = 0.125 miles per minute
Joshua = 1.5/18 = 0.083333 =1/12 miles per minute
Since 0.125 (Brielle) > 1/12 (Joshua)
Brielle will run the marathon faster.
To calculate the time that takes each one to run the entire race (13.1 miles)
Time= distance / speed
Brielle = 13.1 /0.125 = 104.8 minutes Joshua = 13.1 / (1/12)= 157.2 minutesFeel free to ask for more if needed or if you did not understand something.