Find the curvature of the curve r9t) = 3sin4ti+3cos4tj+3tk.

What will be an ideal response?

Mathematics

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Simplify the numerical expression below.(-85 + 45) + 85 

A. 45 B. 125 C. 215 D. -45 E. none of these

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Mathematics

Find projv u.v = k, u = 9i + 2j + 6k

A. 6k
B. k
C. i + j + k
D. i + j + k

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Mathematics

Solve the problem.If $3800 earned simple interest of $254.28 in 11 months, what was the simple interest rate? Round to the nearest tenth of a percent, when necessary.

A. 9.3% B. 7.3% C. 6.3% D. 8.3%

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Mathematics

Find the first term and the common ratio of the geometric sequence.1, , 5, 5, . . .

A. a1 = 1, r = 
B. a1 = 1, r = 5
C. a1 = , r = 5
D. a1 = , r = 

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Mathematics