Предмет: Математика, автор: inenakhov2

За осень этого года при подготовке к зиме высота дома-хатки бобра, выросла на 10 %. Какой, стала высота дома-хатки бобра, если её высота летом была 1,8 м.
очень надо даю 15 баллов

Ответы

Автор ответа: jekadva

2

1,8*1,1=1,98м высота
дома-хатки бобра

inenakhov2: помоги мне ещё пожалуйста

inenakhov2: Из 200 тополей, посаженных весной на месте где за 5 последних лет бобры свалили половину деревьев, принялось 180 деревьев. Сколько процентов тополей принялись этой весной?

jekadva: =90%

inenakhov2: а решение если можно

jekadva: 200:100=2% приходится на одно дерево.......180:2=90%деревьев принялось

inenakhov2: спасибо большое

inenakhov2: Отношение длины прямоугольного внутреннего помещения дома-хатки бобра к его ширине равно 4:3. Найдите площадь этого помещения, если его ширина 2,1 м.

inenakhov2: помоги мне ещё с этим

inenakhov2: я прошу пожалуйста

jekadva: 2,1:3=0,7м приходится на одну часть..........0,7*4=2,8м длина......2,1*2,8=5,88кв.м площадь помещения

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