Given a = 7, b = 6 use the Law of Cosines to solve the triangle for the value of A. Round answer to two decimal places.
A) 43.53°
B) 36.28°
C) 80.44°
D) 100.29°
E) 60.33°
A) 43.53°
Mathematics
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Find the probability of the event.A bag contains 6 red marbles, 3 blue marbles, and 1 green marble. What is the probability of choosing a marble that is not blue when one marble is drawn from the bag?
A. 
B. 7
C. 
D. 
Mathematics
Solve the equation.-3x = -12
A. -9 B. -4 C. 9 D. 4
Mathematics
Solve the system of equations.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4
A. (3, 0, -4) B. (0, -6, 1) C. (0, 6, -1) D. (-3, 0, 4)
Mathematics
Classify the angle as acute, right, obtuse, or straight.
A. Acute B. Obtuse C. Right D. Straight
Mathematics