1a. Given a = 18, B = 67 degrees, and C= 44 degrees, use the Laws of Sines to solve for b. Round your answer to the nearest tenth. 2a. Given a = 7.6, A= 50 degrees, and b = 4.3, use the Laws of Sines to solve for B. Round your answer to the nearest degree.

3a. Given a = 31, A = 84 degrees, and b = 20, use the Law of Sines to solve for B. Round your answer to the nearest degree.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

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