một vật dao động điều hòa với phương trình x = 10cost( pi t - pi/4 ) cm. thời điểm thứ 2018 vật qua vị trí với tốc độ bằng 5pi m/s là ? Ai biết chỉ mình với ạ

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explanation:

first thing first of the answer is with technology. second thing second thing is that the big bang theory did not happened u see they say it did but what they dont realize is that like dinasures are still a round they might deny it but they and look at these 12 foot human skelteons they find lets see didnt the bible say something about giants. hope this peace.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)