wednesdayA
15.09.2020 •
Mathematics
Is 57 divisible by 4 5 6 9 or 10
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Ответ:
5 cannot be a divisor since when you count by 5's you get numbers ending in 5 or 0
(5,10,15,20, etc)
9 cannot be a divisor since 9 x 6 = 54 and 9 sx 7 = 63
None of your answers will work with 57.
3 will work even though you did not list it. 5+7 = 12 and 1+2 = 3. If the sum of the digits = 3, 6 or 9, the number is divisible by 3.
45 is divisible by 3 (4+5=9)
78 is divisible by 3 (7+8=15 and 1+5 = 6)
Ответ:
[12.44 + -7.28] = 5.16
[(3.17)(2.85)] = 9.0345
5.16/9.0345 = 0.571
answer = 0.57