Предмет: Математика, автор: aleksandrstadn

с 20 га собрали по 13 т картошки с гектара.а с 5 га по 18 т с гектара.найди среднюю урожайность картошки на этих двух участках.

Ответы

Автор ответа: 123452912
6
20 х 13 = 260 т - с первого уч
5 х 18 = 90 т - со второго уч.
260 + 90 = 350 т - собрали с двух уч.
20 + 5 = 25 га - площадь двух участков
350 : 25 = 14 т - средняя урожайность на двух уч.
Автор ответа: Алена5555555
2
1)20×13=260 т-собрали с 20 га;   2)5×18=90 т-собрали с 5 га;   3)260+90=350 т-собрали всего;   4)20+5=25 га-площадь вместе;   350÷25=14 т-средняя урожайность

Алена5555555: пожалуйста
Похожие вопросы
Предмет: Английский язык, автор: konor9234
Помогите пожалуйста!!!
A DRIVING LESSON
As soon as I was 17 I was desperate to learn to drive. It seemed sensible at the time but in retrospect it …………… (BE) a mistake to ask my father to teach me to drive. As soon as I got in the car, he started criticising me for slamming the car door.
Anyway, we ……….. (SET) off slowly down the road, my father keeping a close eye on my progress. Everything was fine until I saw my old friend Doug.
Doug and I ……………. (KNOW) each other for ages, we’re really close, so I had to give him a wave. My hand left the wheel, the car went to the left and … into a tree. That was the end of my lessons with Dad.
THE MOSCOW METRO
Wherever you go in Moscow there are always a lot of people. However, in the morning and evening rush hours, the ………….. (BUSY) place in Moscow is the Metro. It carries an estimated three million passengers a day.
Most of these passengers have little time to admire the architectural marvels of the metro and this is a shame. If one……………. (HAVE) the opportunity, there is so much to savour in almost every station.
When the Metro ……………… (DESIGN) in the 1930s, the concept was of something both functional and beautiful, famously described as ‘palaces for the people’. The result is clear for everyone to see.
So when you are next rushing from one station to the next, stop and ask ……………. (YOU) if you really can’t find the time to enjoy one of the best features of the Russian capital.
Предмет: Литература, автор: lianaminiyazova