a pound of butter có nghĩa là gì??????????
A book costs £3.40 and a magazine costs £1.60. If Clara spends exactly £23 on books and magazines, how many of each does she buy?
Lời giải:
Gọi số sách mà Clara đã mua là $a$ và số tạp chí đã mua là $b$ (\(a,b\in\mathbb{N}^*\) )
Theo bài ra ta có: \(3,4a+1,6b=23\)
\(\Rightarrow 3,4a=23-1,6b\leq 23-1,6.1\) do \(b\geq 1\)
hay \(3,4a\leq 21,4\Rightarrow a\leq \frac{21,4}{3,4}\Rightarrow a\leq 6\)
Vì \(a\in\mathbb{N}^*\Rightarrow a\in\left\{1;2;3;4;5;6\right\}\)
Nếu \(a=1\Rightarrow b=\frac{23-3,4}{1,6}=\frac{49}{4}\not\in\mathbb{N}^*\) (loại)
Nếu \(a=2\Rightarrow b=\frac{23-3,4.2}{1,6}=\frac{81}{8}\not\in\mathbb{N}^*\) (loại)
Nếu \(a=3\Rightarrow b=\frac{23-3,4.3}{1,6}=8\) (thỏa mãn)
Nếu \(a=4\Rightarrow b=\frac{23-3,4.4}{1,6}=\frac{47}{8}\not\in\mathbb{N}\) (loại)
Nếu \(a=5\Rightarrow b=\frac{23-3,4.5}{1,6}=\frac{15}{4}\not\in\mathbb{N}^*\) (loại)
Nếu \(a=6\Rightarrow b=\frac{23-3,4.6}{1,6}=\frac{13}{8}\not\in\mathbb{N}^*\) (loại )
Vậy Clara mua $3$ quyển sách và $8$ quyển tạp chí.
John's weight is 67,5 pound and Sarah's weight is 26,5 pound. If both John and Sarah lost x pound weight then Sarah's weight will equal 1/3 of John's weight. The value of x is...
Hiệu cân nặng giữa John và Sarah là:
67,5 - 26,5 = 41 (pound)
Nếu cân ngặn của cả John và Sarah cùng bớt đi x pound thì Sarah nặng bằng 1/3 John. Hiệu số phần bằng nhau là:
3 - 1 = 2 (phần)
Mà khi bớt đi ở cả hai số cùng 1 giá trị thì hiệu của chúng vẫn bằng nhau do đó 2 phần ứng với 41 pound. Vậy 1 phần ứng với:
41 : 2 = 20,5 (pound)
Vậy giá trị của x là:
26,5 - 20,5 = 6 (pound)
At a supermarket , a certain item has increased from 75 cents per pound to 87 cents per pound . What is the percentage increase in the cost of the item ?
Answer : .......%
Số item đó chiếm số % là
\(75:87\times100=86,2\left(\%\right)\)
Nhớ tick mình nha bạn,cảm ơn nhiều.
Dựa vào từ gợi ý viết thành câu hoàn chỉnh:
1, If / baby / boy / we / call / Tom.
……………………………………………………………………
2, Jack / want / cup / coffee ?
……………………………………………………………………
3, Mother/ go / shop / twice / week.
……………………………………………………………………
4, I / like / buy / jar / jam / half / pound / butter.
……………………………………………………………………
1, If / baby / boy / we / call / Tom.
==> If the baby is boy, we will call it Tom
2, Jack / want / cup / coffee ?
==> Does Jack want a cup of coffee?
3, Mother/ go / shop / twice / week.
==> My mother goes shopping twice a week
4, I / like / buy / jar / jam / half / pound / butter.
==> I'd like to buy a jar of jam and half pound of butter
2. Does Jack want a cup of coffee?
3.My mother goes to shop twice a week.
4.I'd like to buy a jar of jam and half pound of butter
1, If / baby / boy / we / call / Tom.
==> If the baby is boy, we will call it Tom
2, Jack / want / cup / coffee ?
==> Does Jack want a cup of coffee
3, Mother/ go / shop / twice / week.
==> My mother goes shopping twice a week
4, I / like / buy / jar / jam / half / pound / butter.
==> I'd like to bye a far of jam and half pound of butter
Giúp mik nka m.n
Dựa vào từ gợi ý viết thành câu hoàn chỉnh
1. Be sure/ get up/ early/ you / be/ late/ school.
2. I/ like / buy/ jar/ jam/ half/ pound/ butter
3. He/ able/ fishing/ classmates/ next holidays.
Thanks.
1. Be sure/ get up/ early/ you / be/ late/ school.
Be sure to get up early or you will be late for school.
2. I/ like / buy/ jar/ jam/ half/ pound/ butter
I'd to buy a jar of jam and half poud of butter
3. He/ able/ fishing/ classmates/ next holidays.
He is able to go fishing with his classmates next holidays
1. Be sure/ get up/ early/ you / be/ late/ school.
Be sure of getting up early or you'll be late for school.
2. I/ like / buy/ jar/ jam/ half/ pound/ butter
I'd like to buy a jar of jam and half a pound of butter.
3. He/ able/ fishing/ classmates/ next holidays.
He'll able to go fishing with his classmates next holidays.
What is money? The pound, the dollar or the franc are actually just like a gram or a kilometre. The difference is that you can exchange money for something (56) ........................ . A five pound note may buy a book, a huge bag of sweets, or a (57) ........................ of cinema tickets. But the note itself is only a printed (58) ........................ of paper which costs almost nothing to make.
Thousands of years (59) ........................ people didn't have money as we know (60) ........................ . There were no banks (61) ........................ even shops. In those days, Mr. Green, the farmer exchanged the corn he (62) ........................ grown for Mr. Hive's honey. This was an exchange arranged between the two (63) ........................, each of whom had something that the other wanted. But in time, most societies invented their own "currencies" (64) ........................ that people could exchange more. The different currencies began to join together, which is why (65) ........................ everyone uses a national currency.
56. A. other B. else C. another D. apart
57. A. couple B. double C. few D. several
58. A. slice B. part C. side D. piece
59. A. since B. past C. before D. ago
60. A. them B. it C. some D. that
61. A. or B. neither C. and D. but
62. A. did B. was C. had D. has
63. A. jobs B. people C. things D. goods
64. A. for B. by C. before D. so
65. A. tomorrow B. today C. recently D. soon
Napoleon III of France was (0).A……. for the invention of the butter substitute known as margarine. He was looking for a cheap (1) ……… to butter for the poorer people of society, and for his army and navy. So he (2) ............... up a prize competition to see who would (3) ............... up with the best solution.
There was only one (4) ................. into this competition, from a man called Meges Mouries. He had (5) ................ over two years experimenting, and finally found an acceptable butter substitute made from milk and various animal fats. It tasted quite pleasant, and spread well on bread, but it was (6) ............. white. (7) ………its colour, Meges¬ Mouries’ invention was awarded the prize. Yellow colouring was added to it at a (8) ............. date.
Margarine soon went into mass (9) ............... and was exported all over the world. In Britain it was called 'Butterine', until protests from farmers (10) ............. to that name being made illegal. Farmers in America were not happy (11) ………....the new arrival on the market either. They (12) …….....to the yellow colouring, saying that it made it resemble butter so (13)……….. that it could deceive consumers.
In effect, Napoleon III's competition is still going on. The ultimate (14) ........... of every margarine manufacturer is to produce a product that is (15) ………… to distinguish from butter. And they keep trying.
0. A responsible B original C fundamental D vital
1. A option B replacement C alternative D choice
2. A set B took C gave D put
3. A make B bring C go D come
4. A competitor B player C attempt D entry
5. A used B spent C tried D made
6. A clear B pure C true D perfect
7. A Despite B Although C However D Nevertheless
8. A further B longer C later D farther
9. A production B creation C industry D construction
10. A changed B ended C brought D led
11. A over B about C at D for
12. A protested B objected C disagreed D argued
13. A justly B nearly C rightly D closely
14. A end B score C goal D finish
15. A impractical B unable C impossible D incapable
1 C
2 A
3 D
4 D
5 B
6 C
7 A
8 C
9 A
10 D
11 B
12 B
13 C
14 C
15 B
Choose one correct answer in each drop-down list.
E-tailers are heading (1) with/for/at/on a record Christmas with forecasts that monthly spending over the internet is about to break through the £2 billion barrier for the first time. IMRG, the Internet retailing association, (2) Are/has/is/where predicting £5 billion total sales over the Christmas period. The Office for National Statistics revealed that British businesses sold £23.3bn worth of goods and (3) Services/product/food/charges on the Internet last year. The ONS survey shows that (4) Although/due to/because/despite strong growth it still represents only about 2.3 per cent of the UK's GDP, suggesting there is still plenty of room for growth. Analysts said that Britain remained Europe's biggest e-commerce market, (5) Looking/accounting/calling/waiting for more than a third of goods and sold over the Internet in the region. Forrester Research, (6) An/a/the/zero article independent research group predicts that British consumers will (7) Lose/spen/save/win £3.2bn over the Christmas trading period, ahead of Germany with £2.5bn (8) But/or/so/and France with £667m. Robin Terrell, the UK Managing Director of Amazon.com, one of the leading online (9) Wholesalers/producers/retailers/manufacturers predicted that shoppers would buy £2.1bn worth of electrical (10) Goods/Inventory/machines/product online by the end of the year, representing 8.5 per cent of all sales in the sector this year.
Choose one correct answer in each drop-down list.
E-tailers are heading (1) with/for/at/on a record Christmas with forecasts that monthly spending over the internet is about to break through the £2 billion barrier for the first time. IMRG, the Internet retailing association, (2) Are/has/is/where predicting £5 billion total sales over the Christmas period. The Office for National Statistics revealed that British businesses sold £23.3bn worth of goods and (3)Services/product/food/charges on the Internet last year. The ONS survey shows that (4) Although/due to/because/despite strong growth it still represents only about 2.3 per cent of the UK's GDP, suggesting there is still plenty of room for growth. Analysts said that Britain remained Europe's biggest e-commerce market, (5)Looking/accounting/calling/waiting for more than a third of goods and sold over the Internet in the region. Forrester Research, (6) An/a/the/zero article independent research group predicts that British consumers will (7) Lose/spend/save/win £3.2bn over the Christmas trading period, ahead of Germany with £2.5bn (8) But/or/so/andFrance with £667m. Robin Terrell, the UK Managing Director of Amazon.com, one of the leading online (9) Wholesalers/producers/retailers/manufacturers predicted that shoppers would buy £2.1bn worth of electrical (10)Goods/Inventory/machines/product online by the end of the year, representing 8.5 per cent of all sales in the sector this year.
Chest of drawers nghĩa là gì? Có phải nghĩa là ngực của ngăn kéo ko?Nếu là nghĩa đó thì ngực của ngăn kéo là cái gì? (cho hình ảnh càng tốt)
chest of drawers nghĩa là tủ có nhiều ngăn