Find the exact solutions to the quadratic equation, using a method of your choice.4x2 - 11x - 3 = 0
A. -4, 3
B. - 
, 3
C. - 
, 4
D. 
, - 
Answer: B
Mathematics
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Solve the system of equations using matrices. Use Gaussian elimination with back-substitution.x - y + 2z= 64x + z= 1x + 5y + z=-19
A. {(1, -4, 0)} B. {(1, 0, -4)} C. {(0, -4, 1)} D. {(0, 1, -4)}
Mathematics
Graph the hyperbola.25x2 = 9y2 + 225
A. 
B. 
C. 
D. 
Mathematics
Find the altitude of the isosceles triangle shown below if 
and 
. Round your answer to two decimal places.
A. 5.12 centimeters
B. 6.25 centimeters
C. 3.13 centimeters
D. 2.46 centimeters
E. 1.38 centimeters
Mathematics
Find the mean and standard deviation of the specified probability density function.f(x) = 
for [6, 13]
A. ? = 3.45, ? = 2.02 B. ? = 9.50, ? = 2.02 C. ? = 9.50, ? = 1.73 D. ? = 3.50, ? = 2.02
Mathematics