summerthewoody9 summerthewoody9

25-10-2021
Mathematics

contestada

PLEASE HELP i got the wrong answers does anyone know how to solve math this way?! please answer 1 and 2 with explanation, using the X method

PLEASE HELP i got the wrong answers does anyone know how to solve math this way please answer 1 and 2 with explanation using the X method class=

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14amavanessa 14amavanessa

25-10-2021

1.
x = 0.212121...
100x = 21.212121...
99x = 100x - x = 21.2121... - 0.2121.. = 21
x = 21/99

2.
3.7 = 3 + 0.7
0.7 as a fraction is 7/10
so 3.7 is 3 7/10

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