Use the figure provided to find the requested expression.Vectors u, v, and w are determined by the sides of ?ABC below:
Find an expression for u in terms of v and w.
A. -v - w
B. v + w
C. v - w
D. w - v
Answer: B
Mathematics
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Solve the problem.Find the center of mass of the hemisphere of constant density bounded 
and the 
A. 
= 0, 
= 0, 
= 
B. 
= 0, 
= 0, 
= 
C. 
= 0, 
= 0, 
= 1
D. 
= 0, 
= 0, 
= 
Mathematics
Solve the quadratic equation by completing the square.x2 + x + 4 = 0
A. 
B. 
C. 
D. 
Mathematics
For the given rectangular equation, give its equivalent polar equation.x2 + y2= 81
A. r = 9 sin ? B. r = 81 C. r = 9 cos ? D. r = 9
Mathematics
Solve.One pound of an ingredient yields 3
cups of the final product. How many pounds of this ingredient will be required by a recipe that yields 5 cups of the final product?
A. 16
lb
B. 1
lb
C. 3
lb
D. 1
lb
Mathematics