the reason no one has answered is because you remark is confusing.
Answer: 74 grams 900 milligrams
Step-by-step explanation:
Total weight of feathers:
700 milligrams × 37 = 25,900 milligrams
Total weight of feathers conversion:
25,900 milligrams = 25,900 ÷ 1,000 = 25 remainder 900 = 25 grams and 900 milligrams
Weight of feathers plus basket:
25 g 900 mg + 49 g = 74 g 900 mg
Angle 4 is 77 degrees. Since angles 1, 2, and 3 must add up to 180 degrees, and angles 3 and 4 must also add up to 180 degrees, angles 1 + 2 must be equal to angle 4