Hi there! :)
Answer:

m∠BGC = 16x - 4
m∠CGD = 2x + 13
m∠BGC + m∠CGD sums up to 90°, therefore:
(16x - 4) + (2x + 13) = 90
Combine like terms and simplify:
16x + 2x - 4 + 13 = 90
18x - 4 + 13 = 90
18x + 9 = 90
18x = 81
18x/18 = 81/8
x = 4.5
Approximatley 4.39. If thought of like .33X=1.45, then you just divide 1.45 by .33
Answer:the last one
Step-by-step explanation:
Divide 12 by 10.4
Hope this helps you
It might come bigger out as a decimal 1.5
The answer is 69
hope this helps (;