Mathematics: 1) 4+8r-6r=6+2r 2) 1-3x=-6+7-2x-x

1) 4+8r-6r=6+2r 2) 1-3x=-6+7-2x-x - id14866221367214065870, kevenluna10oytivm

Ответ:

ecarter8967

09.09.2021

Mathematics

1:-

$\\ \sf \longmapsto 4+8r-6r=6+2r$

$\\ \sf \longmapsto 4+2r=6+2r$

$\\ \sf \longmapsto 2r-2r=6-4$

$\\ \sf \longmapsto 0=2$

$\\ \sf \longmapsto r=\infty$

2:-

$\\ \sf \longmapsto 1-3x=-6+7-2x-x$

$\\ \sf \longmapsto 1-3x=1-3x$

$\\ \sf \longmapsto 0=0$

$\\ \sf \longmapsto x=\infty$

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Ответ:

kingoc321

25.09.2021

Mathematics

You set up a cross multiplication where
38.50 x

55 100
38.50 is a fraction of 55, x is a fraction of 100 and these are proportional. to find x you multiply 38.50 by 100 and divide by 55. so:

38.50*100=3,850
3,850/55=70
we get 70

HOWEVER, 70 is not the answer. It just means that 38.50 is 70% of 55. she paid 70% out of 100%, the difference is 30%.

the answer is that the employee discount is of 30%

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1) 4+8r-6r=6+2r
2) 1-3x=-6+7-2x-x

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