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ravensenpai423
23.08.2021 •
Mathematics
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Ответ:
A. It is a geometric sequence.
B. She will complete station 5 , 64 minutes or 1 hour and 4 minutes after starting.
C. The time she will complete the 8th station is given by, 8 hours and 32 minutes after starting.
Step-by-step explanation:
The x-coordinate is the station number , and the y co-ordinate is the time in minutes since the start of the race that she completed the task .
The co-ordinates are given as following,
x y
1 4
2 8
3 16
4 32
Hence, it is given as,
Y = minutes(1)
A. So, it is a geometric sequence.
B. The time required by her to complete station 5 is given by,
Y = minutes
= minutes
= 64 minutes
Hence, she will complete station 5 , 64 minutes or 1 hour and 4 minutes after starting.
C. The time she will complete the 8th station is given by,
Y = minutes
= 512 minutes
= hours
= hours
= 8 hours 32 minutes (after starting)