Предмет: Математика, автор: тата381

1). В 250 кг сахарной свеклы содержится 45 кг сахара.Сколько процентов составляет содержание сахара в сахарной свекле?
2). После сушки 50 кг свежего чернослива получили 18 к сушеного.Сколько процентов составляет масса сушеного чернослива от массы свежего?
3). В 450 кг руды содержится 67,5 кг меди.Сколько процентов меди содержится в руде?

Ответы

Автор ответа: Георгий2003

1) 45*100:250=18%
2) 18*100:50=36%
3) 67,5*100:450=15%

Автор ответа: Аноним

ты лудши

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Русский язык, автор: Аноним

Удивительное явление природы - радуга. Правописание
местоимений. Предлоги перед личными местоимениями
Определи падеж.
В НИХ
у на тебя
V ВИНю вас
от меня
за мной
ПО НИМ
V с ним
МТЫ
у о тебе помогите паааже

6 лет назад

Предмет: Английский язык, автор: PIXIP

I wish you
Yupaten I Put the verbs given in brackets into the correct for
I wish I
(be) taller so that I could be in the basketball team. I wish I
(can drive) a car and we could go travelling. The Browns live
in the city, but they wish they (live) in the suburbs. Robert can't dance very well, but he wishes he (an dance) better
Kate is having a hard time learning English at the University. She wishes she (study) it better at school. Mike didn't go to college after school.
Now, he wishes he
(go) to college
The weather was hot while we were there. I wish it
(be) a bit cooler.
(stop) watching TV while I am talking to you. I wish she (can come) yesterday but she had an important meeting. I wish I
(know) someone to whom I could have gone for advice when I was 18.
Упражнение 2. Раскройте скобки, употребляя требующуюся форму сослагательного наклонения после I wish
The weather was awful. I wish it
(to be) better. I wish I
(to know) Sue's telephone number. I wish it
(not to rain) so
much in England last week. Do you wish you
(lo study) science instead of languages last year? I feel sick. I wish I
(not to eat) so
much.
It's crowded here. I wish there
(not to be) so many people. I wish I
(to be) taller
(stop) shouting. I am not deaf you know. I wish he
(to borrow) that book from the library last week. I wish
you
(to give) him my phone number at that party.
I wish it
(to stop) raining. I wish I (can speak) several languages.
If only I (to have) the chance to study when I was younger.
I wish you
a
Упражнение 3
1) Alice didn't get a good grade. She wishes she (work)
harder.2) Tom likes football very much. He wishes he (become)
professional football player. 3) He was running very fast when he had a heart attack. If only he (not/run)
so fast. 4) She's keen on computers. She
wishes she (study)
computer science next school year. 5) I am sorry I don't know how to use the computer. If only I (know)
how
to use it. 6) I stayed late at work and missed the last bus. I wish I (stay)
at work late
Упражнение 4
While trying to sail round the world in a small boat, Harry, Sandy and Joe were shipwrecked one night I wish there (be)an island nearby, Harry said. By
moming. they were washed up on to a desert island. For six months they lived on fish, nuts and fruit. One day, they saw a bottle on the shore. If only
(contain a note or something!' Sandy said. They opened it and a genie appeared. 'It's high time someone (open) har bottle! the genie gasped. Tm so
grateful. I'll give you one wish each. You first the genie said, pointing to Harry. That's easy, Harry said. "I wish I (be)with my family. And (whoosh!) he
disappeared. 'Me too,' Sandy said. "If only Il
lyll
(can) be in dear old Glasgow.' And (whoosh!) off he went. 'And you sir?" the genie asked Joe. 'I wish
(have)my friends back!" Joe said.
it

6 лет назад

Предмет: Химия, автор: frkwz9cbku

СРОЧНО
химия 8 класс
даю 40 баллов

6 лет назад

Предмет: Алгебра, автор: Nastya122121

А)(х-4) в квадрате * (х в квадрате -16) =?
б)х*(х в квадрате - 16)=?
в)7*(х-4) в квадрате=?

9 лет назад

Предмет: Математика, автор: Аноним

самолет за 4 часа пролетел 3200км.какое расстояние за это же время проедит мотоциклист ,скорость которого составляет 1/10скорость самолета?

9 лет назад