Предмет: Математика, автор: firuzka1969

умаляю дам все балы нужна помоч дам ,35балов​

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Автор ответа: Kostinaalina
1

Ответ:

номер 1

а) 0,42*100=42

б) 35%=36/100=7/20

номер 2

а) 58*20/100=11,6

б) 6*100%:30%=20

номер 3

1) 30%+25%=55(%)- за 2 дня.

2) 100%-55%=45(%)-осталось прочитать.

3) 135:0,45=300(стр.)-всего в книге.

4) 300*0,25=75(стр.)-в 1 день.

Ответ:75 страниц было прочитано в 1 день.

номер 4

Прямые углы:угол ABC ; CTL.

надеюсь помогла!

Автор ответа: neksusha
1
если что-то не понятно,пиши
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