Perform the indicated arithmetic.1
÷ 
A. -1
B. -2
C. -1
D. -1
Answer: D
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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.
= 15, 
= 12, ? = 29°
Find 
A. 13.1 B. 37.8 C. -590.7 D. 28.3
Solve the problem.A sail on a sailboat is supported by a mast and a boom. The length and direction of the mast and boom can be described by the vectors m = i - 4j + 5k and b = -2i + 3j + k, respectively, where the components are in meters. Find the angle (to the nearest tenth of a degree) between the mast and boom.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A satellite is orbiting the earth such that its displacement D north of the equator (or south if D < 0) is given by 
Sketch two cycles of D as a function of t. Use 
, and 
.
A. 
B. 
C. 
D. 
Provide an appropriate response.By using matrix reduction, solve the system: 
What will be an ideal response?