The mass of 300 indentical cans is 4.5 kg. What is the mass of a can in gam ?

LH

LÊ HỒNG LAM

26 tháng 12 2016 - olm

#Toán lớp 6

1

VQ

Vũ Quý Đạt

26 tháng 12 2016

the mass of a can is

4500 : 300 =15 (g)

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O

ôl

1 tháng 11 2016 - olm

Câu 9:
The average mass of a group of children is 47kg. If of the number of children are girls and their average mass is 39kg. Find the average mass of the boys.
Answer: The average mass of the boys is kg

Câu 10:
A 6-digit number begins with the digit 8. The number is divisible by 9 and all digits of the number are different. What is the possible smallest value of this number?
Answer:

#Toán lớp 5

6

NT

Nguyễn Thanh Huyền

4 tháng 11 2016

Câu 9 : 52 kg

Câu 10 : 801234

đúng 100% nhớ tk 3 nhé

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TG

Trần Gia Đạo

1 tháng 11 2016

9.Young male average weight is 47 kg + (47-39) = 55 kg

10. The minimum value is 800 001

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I

Inuyasha

12 tháng 11 2016 - olm

Câu 10:
The average mass of a group of children is 47kg. If 5/13 of the number of children are girls and their average mass is 39kg. Find the average mass of the boys.
Answer: The average mass of the boys is kg

#Toán lớp 5

2

TG

Trần Gia Đạo

12 tháng 11 2016

Google dịch :

"Khối lượng trung bình của một nhóm trẻ em là 47kg. Nếu 5/13 của số trẻ em là con gái và khối lượng trung bình của họ là 39kg. Tìm khối lượng trung bình của các chàng trai.
Trả lời: Khối lượng trung bình của các chàng trai là kg

Câu hỏi tương tự Đọc thêm"

Góp ý với bạn nên viết đề bằng Tiếng Việt

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BD

Băng Dii~

12 tháng 11 2016

Số em nam :

13 - 5 = 8 ( em )

Tổng cân nặng của 13 em :

47 x 13 = 611 ( kg )

Tổng cân nặng của các em gái :

39 x 5 = 195 ( kg )

Tổng cân nặng của các em nam :

611 - 195 = 416 ( kg )

Trung bình mỗi em nam cân nặng :

416 : 8 = 52 ( kg )

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LM

Lê Minh Trang

29 tháng 9 2019

A box coutains 15 identical reams paper. The total mass of the box with 1/5of all the reams of paper. The mass of the emty box is 2/7 of a reams of paper . What í the mass of the emty box

#Toán lớp 6

1

MP

Mai Phương Bùi

1 tháng 10 2019

cho mềnh hỏi đây là toán hay anh vại bạn

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LM

Lê Minh Trang

1 tháng 10 2019

annnnnnnnf -anh

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NN

Nguyễn Nhật Tân

12 tháng 12 2016 - olm

The average mass of a group of children is 47kg. If of the number of children are girls and their average mass is 39kg. Find the average mass of the boys.

#Toán lớp 5

4

NN

Năm Nay Em Lên Lớp 6

12 tháng 12 2016

dịch: khối lượng trung bình của một nhóm trẻ em là 47kg. Nếu số lượng trẻ em là con gái và khối lượng trung bình của họ là 39kg. Tìm khối lượng trung bình của các chàng trai.

dap so ra 52

k mik nha

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NN

Nguyễn Nhật Tân

12 tháng 12 2016

nam nay em len lop 6 oi

bai nay tinh bang cach nao vay

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D

Đạt

25 tháng 4 2017 - olm

The average mass of a group of children is 47kg. If of the number of children are girls and their average mass is 39kg. Find the average mass of the boys.

#Toán lớp 5

2

MG

Mysterious Girl

25 tháng 4 2017

bài này thiếu số lượng mk thêm vào và dịch nhé

khối lượng trung bình của một nhóm trẻ em là 47kg. nếu 5/13 số trẻ em đó là con gái và khối lượng trung bình của chúng là 39kg tìm khối lượng trung bình của các bé trai

số bé trai là 13-5=8 (em)

tổng cân nặng của 13 em là 47x13=611(kg)

tổng cân nặng của các bé gái là 39x5=195(kg)

tổng cân nặng của các bé trai là 611-195=416(kg)

trung bình mỗi bé cân nặng 416:8=52(kg) ???!

nghe có vẻ....

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TO

Tobiichi Origami

25 tháng 4 2017

Answer: The average mass of the boys is 52 kg
k for me, please

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LQ

Lê Quỳnh Anh

19 tháng 2 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species’ death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example,...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species’ death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may change and a species may not be adapted. Food resources may be affected by environmental changes, which will then cause problems for a species requiring these resources. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.

The fossil record reveals that extinction has occurred throughout the history of Earth. Recent analyses have also revealed that on some occasions many species became extinct at the same time - a mass extinction. One of the best-known examples of mass extinction occurred 65 million years ago with the demise of dinosaurs and many other forms of life. Perhaps the largest mass extinction was the one that occurred 225 million years ago, when approximately 95 percent of all species died. Mass extinctions can be caused by a relatively rapid change in the environment and can be worsened by the close interrelationship of many species. If, for example, something were to happen to destroy much of the plankton in the oceans, then the oxygen content of Earth would drop, even affect organisms not living in the oceans. Such a change would probably lead to a mass extinction.

One interesting, and controversial, finding is that extinctions during the past 250 million years have tended to be more intense every 26 million years. The periodic extinction might be due to intersection of the earth’s orbit with a cloud of comets, but this theory is purely speculative. Some researchers have also speculated that extinction may often be random. That is, certain species may be eliminated and others may survive for no particular reason. A species’ survival may have nothing to do with its ability or inability to adapt. If so, some of revolutionary history may reflect a sequence of essentially random events.

What does the author say in paragraph 1 regarding most species in Earth’s history?

A. They have remained basically unchanged from their original forms.

B. They have caused rapid change in the environment.

C. They are no longer in existence.

D. They have been able to adapt to ecological changes.

#Mẫu giáo

1

DH

Dương Hoàn Anh

19 tháng 2 2019

Đáp án : C

No longer in existence = không còn tồn tại. Ngay câu đầu tiên của bài: It is estimated that over 99 percent of all species that ever existed have become extinct = người ta ước lượng rằng hơn 99% các loài động vật từng tồn tại đã trở nên tuyệt chủng

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DM

Dương Minh

1 tháng 12 2019

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species' death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may...

Đọc tiếp

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.

It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species' death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may change and a species may not be adapted. Food resources may be affected by environmental changes, which will then cause problems for a species requiring these resources. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.

The fossil record reveals that extinction has occurred throughout the history of Earth. Recent analyses have also revealed that on some occasions many species became extinct at the same time - a mass extinction. One of the best-known examples of mass extinction occurred 65 million years ago with the demise of dinosaurs and many other forms of life. Perhaps the largest mass extinction was the one that occurred 225 million years ago, when approximately 95 percent of all species died. Mass extinctions can be caused by a relatively rapid change in the environment and can be worsened by the close interrelationship of many species. If, for example, something were to happen to destroy much of the plankton in the oceans, then the oxygen content of Earth would drop, even affect organisms not living in the oceans. Such a change would probably lead to a mass extinction.

One interesting, and controversial, finding is that extinctions during the past 250 million years have tended to be more intense every 26 million years. The periodic extinction might be due to intersection of the earth's orbit with a cloud of comets, but this theory is purely speculative. Some researchers have also speculated that extinction may often be random. That is, certain species may be eliminated and others may survive for no particular reason. A species' survival may have nothing to do with its ability or inability to adapt. If so, some of revolutionary history may reflect a sequence of essentially random events.

What does the author say in paragraph 1 regarding most species in Earth's history?

A. they have remained basically unchanged from their original forms.

B. they are no longer in existence.

C. they have been able to adapt to ecological changes.

D. they have caused rapid change in the environment

#Mẫu giáo

1

NH

Nguyen Hoang Hai

1 tháng 12 2019

Đáp án B

Dịch nghĩa: Tác giả nói gì về phần lớn các loài động vật trong lịch sử trái đất ở đoạn l?

A. Chúng gần như không thay đổi gì so với thời xưa.

B. Chúng không còn tồn tại.

C. Chúng đã thích nghi với sự thay đổi sinh thái.

D. Chúng gây ra những thay đổi nhanh chóng đến môi trường.

Giải thích: Thông tin nằm ở “It is estimated that over 99 percent of all species that ever existed have become extinct”.

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LQ

Lê Quỳnh Anh

1 tháng 5 2019

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50. It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species' death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may...

Đọc tiếp

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.

It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species' death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may change and a species may not be adapted. Food resources may be affected by environmental changes, which will then cause problems for a species requiring these resources. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.

The fossil record reveals that extinction has occurred throughout the history of Earth. Recent analyses have also revealed that on some occasions many species became extinct at the same time - a mass extinction. One of the best-known examples of mass extinction occurred 65 million years ago with the demise of dinosaurs and many other forms of life. Perhaps the largest mass extinction was the one that occurred 225 million years ago, when approximately 95 percent of all species died. Mass extinctions can be caused by a relatively rapid change in the environment and can be worsened by the close interrelationship of many species. If, for example, something were to happen to destroy much of the plankton in the oceans, then the oxygen content of Earth would drop, even affect organisms not living in the oceans. Such a change would probably lead to a mass extinction.

One interesting, and controversial, finding is that extinctions during the past 250 million years have tended to be more intense every 26 million years. The periodic extinction might be due to intersection of the earth's orbit with a cloud of comets, but this theory is purely speculative. Some researchers have also speculated that extinction may often be random. That is, certain species may be eliminated and others may survive for no particular reason. A species' survival may have nothing to do with its ability or inability to adapt. If so, some of revolutionary history may reflect a sequence of essentially random events.

Question 45: What does the author say in paragraph 1 regarding most species in Earth's history?

A. they have remained basically unchanged from their original forms.

B. they are no longer in existence.

C. they have been able to adapt to ecological changes.

D. they have caused rapid change in the environment.

#Mẫu giáo

1

DH

Dương Hoàn Anh

1 tháng 5 2019

Đáp án B

Dịch nghĩa: Tác giả nói gì về phần lớn các loài động vật trong lịch sử trái đất ở đoạn l?

A. Chúng gần như không thay đổi gì so với thời xưa.

B. Chúng không còn tồn tại.

C. Chúng đã thích nghi với sự thay đổi sinh thái.

D. Chúng gây ra những thay đổi nhanh chóng đến môi trường.

Giải thích: Thông tin nằm ở “It is estimated that over 99 percent of all species that ever existed have become extinct”.

Đúng(0)

LQ

Lê Quỳnh Anh

15 tháng 5 2019

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50. It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species' death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may...

Đọc tiếp

Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions from 43 to 50.

It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species' death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may change and a species may not be adapted. Food resources may be affected by environmental changes, which will then cause problems for a species requiring these resources. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.

The fossil record reveals that extinction has occurred throughout the history of Earth. Recent analyses have also revealed that on some occasions many species became extinct at the same time - a mass extinction. One of the best-known examples of mass extinction occurred 65 million years ago with the demise of dinosaurs and many other forms of life. Perhaps the largest mass extinction was the one that occurred 225 million years ago, when approximately 95 percent of all species died. Mass extinctions can be caused by a relatively rapid change in the environment and can be worsened by the close interrelationship of many species. If, for example, something were to happen to destroy much of the plankton in the oceans, then the oxygen content of Earth would drop, even affect organisms not living in the oceans. Such a change would probably lead to a mass extinction.

One interesting, and controversial, finding is that extinctions during the past 250 million years have tended to be more intense every 26 million years. The periodic extinction might be due to intersection of the earth's orbit with a cloud of comets, but this theory is purely speculative. Some researchers have also speculated that extinction may often be random. That is, certain species may be eliminated and others may survive for no particular reason. A species' survival may have nothing to do with its ability or inability to adapt. If so, some of revolutionary history may reflect a sequence of essentially random events.

What does the author say in paragraph 1 regarding most species in Earth's history?

A. they have remained basically unchanged from their original forms

B. they are no longer in existence

C. they have been able to adapt to ecological changes

D. they have caused rapid change in the environment

#Mẫu giáo

1

DH

Dương Hoàn Anh

15 tháng 5 2019

Đáp án B

Dịch nghĩa: Tác giả nói gì về phần lớn các loài động vật trong lịch sử trái đất ở đoạn l?

A. Chúng gần như không thay đổi gì so với thời xưa.

B. Chúng không còn tồn tại.

C. Chúng đã thích nghi với sự thay đổi sinh thái.

D. Chúng gây ra những thay đổi nhanh chóng đến môi trường.

Giải thích: Thông tin nằm ở “It is estimated that over 99 percent of all species that ever existed have become extinct”.

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