Mathematics, 05.04.2020 05:20 lily3934
Lena is playing her accordion by compressing and stretching it. The accordion's length (in cm) t seconds
after it's completely stretched is modeled by A(t). Here, t is entered in radians.
A(t) = 25 cos (Tt) + 65
How long does it take Lena to compress the accordion completely and then stretch it back out to a length
of 50 cm?
Round your final answer to the nearest tenth of a second.
Answers: 1
.
.
seconds, and stretches back  to 50cm at 
; therefore, it takes Lena 4.069 seconds to stretch the accordion back again, which to the nearest tenth of a second is  4.1s
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Lena is playing her accordion by compressing and stretching it. The accordion's length (in cm) t sec...
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