Lena is playing her accordion by compressing and stretching it. The accordion's length (in cm) t seconds
1 answer:
Answer:
It takes Lena 4.1 seconds to compress the accordion completely and then stretch it back out to a length of 50cm.
Step-by-step explanation:
I am assuming the function without a T: .
The function is graphed in the figure attached, and the blue line is .
From the graph we see that the accordion is completely stretched (has minimum length) at 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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Answer:
(–5, 12) is the correct answer.
Step-by-step explanation:
We are given the following values:
Now, we know the following identities:
Now, the values are:
Sine value is positive and cos, tan values are negative.
It can be clearly observed that is in 2nd quadrant.
2nd quadrant means, the value of will be negative and
will be positive.
Let us have a look at the value of :
Please refer to the attached image for clear understanding and detailed explanation.
Hence, the correct answer is coordinate (x,y) is (–5, 12)
