Let v and w be two vectors in the plane with given magnitudes. The angle between v and w is ?. Find the expression. Round the answer to the nearest tenth.
= 11, 
= 7, ? = 78°
Find 
A. 17.8
B. -39.0
C. 19.5
D. 15.9
Answer: C
Mathematics
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= x2 + y2 and dx/dt = 12, then what is dy/dt when x = 1 and y = 0?
A. - 
B. -12
C. 
D. 12
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A. $10,764.00 B. $40,323.60 C. $30,636.00 D. $1076.40
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Write the expression with positive exponents only. Then simplify, if possible.(-4)-2
A. - 
B. -16
C. 16
D. 
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