Find the magnitude and direction angle (to the nearest tenth) for each vector. Give the measure of the direction angle as an angle in [0,360°].

A. 7; 233.1°
B. 5; 53.1°
C. 5; 233.1°
D. 5; 216.9°


Answer: C

Mathematics

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Match the surface show below to the graph of its level curves.

A.

B.

C.

D.

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Solve the problem.If v = 10i + j and w = 7i + j, find .

A.
B.
C. 3
D.

Mathematics

Determine which law applies. Then solve the triangle, if possible. Round angles to the nearest tenth when necessary, and round side lengths to the nearest hundredth when necessary.B = 27.9°C = 112.2°b = 48.29

A. Law of sines; A = 39.9°, a = 66.2, c = 95.55 B. Law of cosines; A = 37.9°, a = 97.55, c = 68.2 C. Law of sines; A = 37.9°, a = 95.55, c = 66.2 D. Law of cosines; A = 39.9°, a = 68.2, c = 97.55

Mathematics

?Use an inverse matrix to solve (if possible) the system of linear equations. ?

A. ?(  )
B. ?( 4,  )
C. ?(  )
D. ?(  )
E. ?( , 3 )

Mathematics