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I suppose you're supposed to convert 100111 from base 2 to base 10. We have

so the missing number is 39.
Answer:
can I see a copy of the picture? I will edit answer once I can see the picture of the gingerbread man
Answer:
105
Step-by-step explanation:
500 goes into 100, 5 times
21 times 5 is 105
So 21/100 is equal to 105/500
Or you can do
500*0.21=105