-
Помогите пожалуйста!
Положительные числа A и B таковы, что число A составляет 25 % от числа 3A+5B. Сколько процентов от этого числа составляет число B?-
Предмет:
Алгебра -
Автор:
tuckerlynch - 5 лет назад
-
Ответы 2
-
Спасибо огромное!
-
Автор:
pennington - 5 лет назад
-
0
-
-
25%=25/100=0,25A=0,25(3A+5B)A/0,25=3A+5B4A=3A+5B4A-3A=5BA=5BB=A:5=0,2AB/(3A+5B)=0,2A/(3A+A)=(0,2A)/(4A)=0,050,05*100%=5% - составит число В от числа 3А+5ВОтвет: 5%
-
Автор:
chewy14 - 5 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
Помогите пожалуйста. Очень срочно.
1. This film is _________ the one we saw last week
a) more better than b) some better than
c) much better than d) any better as
2. That decision seemed to be the _________ all suggested before
a) best of b) much better than c) very good than d) worse of
3. As that part of the road is _________ one, the traffic jams are frequent there.
a) the narrowest b) much narrow
c) the least narrow d) much more narrow
4. Ann can not be _________ to him _________ she was to the rest of the family.
a) so gentle...than b) gentler...as
c) so gentle... as d) more gentler... than
5. He’s getting _________. His last test was awful.
a) more and more careful b)more and more careless
c) less and less carefully d) more or less carelessly
6. _________ the European Union becomes, _________ inevitable will be differences between the
member countries.
a) as bigger... as more b) the bigger ...the most
c) bigger ... more d) the bigger...the more
7. During the match Barcelona looked _________ winners.
a) the more possible b) the more possibly
c) much possible d) little more possible
8. _________ Sue stays in Canada, _________ she wants to go back to England.
a) the less... the less b) the longer.. .the less
c)as longer...the less d) the longest... the least
9. Actions speak _________ words.
a) more louder than b) the loudest than
c) louder than d) as louder as
10. If you require _________ information or assistance, ask at your local station.
a) farther b) furthest c) further d) the farthest
11. That was _________ case in his practice.
a) the least difficult b) the less difficult
c) the much more difficult d) the least more difficult
12. I’d like this dish. It smells _________ than the previous one.
a) nicely b) more nicely c) nicer d) more nice
13. She is _________ her sister.
a) the most livelier as b) twice more lively as
c) twice as lively than d) twice as lively as
14. She works _________ when she’s doing something for her family.
a) hardest b) most hardly c) the harder d) the hardliest
15. She looks _________ than her daughter.
a) less older b) much elder c) no older d) more old
16. My friend runs _________ than I. So it isn’t a surprise that he has won.
a) a little more slowly b) a lot more quickly
c) much more quicker d) little more quickly
17. This winter there are _________ accidents on the roads in comparison with the last winter.
a) a lot fewer b) much fewer c) a little more d) much less
2
18. The necklace in that shop is _________. Let’s return there and buy it.
a) much more cheaper b) a little less expensive
c) the most cheap d) the least cheaper
19. Today he sounds _________. We can speak to him.
a) much less sensible b) a little more sensibly
c) least sensible d) a bit more sensible
20. Nowadays many people have _________ opportunities to learn English.
a) a little more b) many more c) much less d) much fewer-
Предмет:
Английский язык -
Автор:
dannaoujz - 5 лет назад
-
Ответов:
1 -
Смотреть
-
-
Определить вид придаточной части (определительная, изъяснительная или обстоятельственная)
1)Расти, страна, где волею единой народы все слились в один народ!
2)Уже совсем рассвело и народ стал подниматься, когда я вернулся в свою комнату
3)Я видел, как из леса вышел волк.
4)Я хочу, чтобы вы действовали смелее и решительнее.
5)В то мгновение, когда он отдернул шторы, небо озарила вспышка молнии, и Фандорин увидел за стеклом, прямо перед собой, мертвенно-белое лицо с черными ямами глаз.
6)На прямо поставленные вопросы Эраст Петрович отвечал мычанием и все норовил отвернуться, поэтому тактику пришлось сменить.
-
Предмет:
Русский язык -
Автор:
smokey - 5 лет назад
-
Ответов:
1 -
Смотреть
-
-
(а+31)-25=69.........
-
Предмет:
Математика -
Автор:
brooklyn0tcc - 5 лет назад
-
Ответов:
2 -
Смотреть
-
-
Што такое зашушкалис
-
Предмет:
Русский язык -
Автор:
marissa - 5 лет назад
-
Ответов:
1 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35922 -
Askold
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
770
How much to ban the user?
1 hour
1 day
100 years