21. A weight is attached to a spring and reaches its equilibrium position (x 0). It is then set in motion resulting in a displacement of x 20 cos t, where x is measured in centimeters and t is measured in seconds. See the figure shown to the right. Answer parts (a) and (b) -20 Equilibrium (a) What is the spring's displacement when t cm (Type an integer or decimal rounded to one decimal place as needed.) What is the spring's displacement when t? cm (Type an integer or decimal rounded to one decimal place as needed.) 5m What is the spring's displacement when t= cm (Type an integer or decimal rounded to one decimal place as needed.) (b) What is the spring's velocity when t ? 2 cm/sec (Type an integer or decimal rounded to one decimal place as needed.) What is the spring's velocity when t? cm/sec (Type an integer or decimal rounded to one decimal place as needed.) 5T What is the spring's velocity when t ? cm/sec (Type an integer or decimal rounded to one decimal place as needed.) wwwwwywu

Q: What is the correct answer ? I have to show work.

A: Given Information: Sample size (n) = 22  Mean (u) = 12 Standard deviation (s) = 5.4

Q: can you do the next two parts please

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Q: Help me answer the questions

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Q: How do you know to do this?

A: or you can use Heron's Formula to find the area of the triangle.

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Q: can you do the next part

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Q: could you provide an example please?

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Q: can you work it out step by step

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Q: Part D?

A: As per your instructions i have to solve part(D)

Q: e question 3-8 please, show all of your work, thank you.

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