Solve by using the quadratic formula.3x2 + 12x + 
= 0
A. - 
, 
B. 
, 
C. - 
, - 
D. 
, - 
Answer: C
Mathematics
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Change the order of integration and evaluate the integral.
A. 
?(15? - 8)
B. 
?(15? - 8)
C. 
?(15? - 16)
D. 
?(15? - 16)
Mathematics
Find the indicated matrix.Let C = 
. Find 
C.
A. 
B. 
C. 
D. 
Mathematics
Multiply.0.209
A. 0.000627 B. 0.627 C. 6.27 D. 0.0627
Mathematics
Solve the problem.A domed ceiling is a parabolic surface. For the best lighting on the floor, a light source is to be placed at the focus of the surface. If 10 m down from the top of the dome the ceiling is 19 m wide, find the best location for the light source.
A. 6.9 m down from the top B. 9 m down from the top C. 2.3 m down from the top D. 4.6 m down from the top
Mathematics