Answer:
D
Step-by-step explanation:
in short, we will start off by making the left-side of the dot and the recurring numbers a variable, say "x", then multiplying it by some power of 10 that moves the recurring numbers over to the left, let's do so

7 4/5 feet long because 20 2/5 can't be subtracted by 12 3/5 so you change 20 2/5 to 19 7/5. 19-12=7 and 7-3=4 so the answer is 7 4/5 feet long
Well, if you separate 35 into seven parts, you get 5. You'd then take 5 and multiply it by 6. So
35÷7=5
6×5=30
Joshua answered 30 questions correctly.