Calculate the angle between a and b (correct to the nearest degree).
a=3i-2j, b=-7j+k
57°
Mathematics
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Provide an appropriate response.
A fence board is 96 inches long. 
inches is cut off. The saw blade takes off an additional 
inches. How long is the finished board?
A. 
inches
B. 
inches
C. 
inches
D. 
inches
Mathematics
Factor the trinomial completely.8x3 + 6x2 - 9x
A. (x2 - 3)(8x + 3) B. x(8x + 1)(x - 9) C. (2x - 3)(4x + 3) D. x(2x + 3)(4x - 3)
Mathematics
Find the distance d(P1, P2) between the points P1 and P2.P1 = (5, 3); P2 = (-1, -5)
A. 100 B. 11 C. 10 D. 20
Mathematics
Use the addition property of equality to solve the equation.4f = 3f - 13
A. -13 B. -10 C. 13 D. -12
Mathematics