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Tyrant4life
25.04.2020 •
Mathematics
Plzzzz help!!
Thank you!
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Ответ:
14.66
Step-by-step explanation:
Length of an arc = (angle/360)*2*radius*pi
plugin you get (140/360)*2*6*pi=14.66
Ответ:
The question is incomplete. Here is the complete question.
Malcolm and Theo's families are both traveling to the same vacation resort. The equation d = 65t models the distance, d, that Malcolm's family travels after t hours.
The graph below shows the relationship between the distance and the amount of time that Theo's family traveled.
How much faster did Malcolm's family travel than Theo's family?
a) 10 miles per hour
b) 15 miles per hour
c) 30 miles per hour
d) 65 miles per hour
b) 15 miles per hour
Step-by-step explanation: Speed is given by the change in distance per change in time or:
For Theo's family, the graph shows the change in miles is constant in hours, so, the speed they are traveling is
For Malcolm's family:
At t = 0: d = 65*0 = 0
At t = 4: d = 65*4
Then, Speed is:
Theo travels at 50 mph and Malcolm at 65 mph, therefore, Malcolm is 15 miles per hour faster than Theo