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bobbyxii6033
03.12.2020 •
Mathematics
Please help asap due soon
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Ответ:
x=9
y= -3
4/x-y = 4/9 - (-3) = 4/9+3 = 4/12 = 1/3
Ответ:
10 numbers
we can repeat
9 choices for first digit
10 for second
10 for third
10 for fourth
10 for fifth
10 for sixth
10 for seventh
10 for eighth
9*10*10*10*10*10*10*10 choices or
90,000,000 different extentions