Find the dot product v ? w.v = 2i + j + 3k and w = i + 2j - 3k
A. 5
B. -5
C. -9
D. -16
Answer: B
Mathematics
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Find the vertex of the quadratic equation's graph and determine whether the graph opens up or down.y = 4x2 + 6x - 8
A. 
, down
B. 
, down
C. 
, up
D. 
, up
Mathematics
Provide an appropriate response.Write as an algebraic expression: Twice the sum of m and 8
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the formula for the specified variable.a + b = s + r for s
A. s = a + b - r
B. s =
C. s = r(a + b)
D. s = + b
Mathematics
Complete the square and write the equation in standard form. Then give the center and radius of the circle.x2 + y2 - 2x + 14y + 50 = 81
A. (x + 7)2 + (y - 1)2 = 81 (-7, 1), r = 9 B. (x - 1)2 + (y + 7)2 = 81 (1, -7), r = 9 C. (x - 1)2 + (y + 7)2 = 81 (-1, 7), r = 81 D. (x + 7)2 + (y - 1)2 = 81 (7, -1), r = 81
Mathematics