Use a related equation that has the variable on one side. then simplify the other side.

m= 16 it's m over 4
-
4


a.
m = 64

b.
m = 4

c.
m = 12

d.
m = 20

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47

b is the correct answer

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