There were 30 red tailed hawks counted during fqll. This was one-fourth of the hawks counted. How many hawks were not red tailed?

90 hawks counted were not red tail.

Step-by-step explanation: If there were 30 hawks to count for a fourth of the hawks counted to solve you just must include the other 3 counting of 30 hawks resulting within the of the full 120 hawks counted only 30 were red tail.

120

Step-by-step explanation:

30 x 4 = 120

(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

probability for j is 1/4

while

a is 1/6