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                                                                                      ~ Mn oi help meee!!! :'(( ~A 3-meter ladder stands on horizontal ground and reaches 2.8 meters up a vertice wall. How far is the foot of the ladder from the base of the wall???*Tạm dịch nha, có j sai sót mn góp ý thoải mái nhaa! Mik thấy dịch nó cứ sao sao í?!?*Một cái thang 3 mét đứng trên mặt đất nằm ngang và đạt 2,8 mét lên một bức tường đỉnh. Chân thang...
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                                                                                      ~ Mn oi help meee!!! :'(( ~

A 3-meter ladder stands on horizontal ground and reaches 2.8 meters up a vertice wall. How far is the foot of the ladder from the base of the wall???

*Tạm dịch nha, có j sai sót mn góp ý thoải mái nhaa! Mik thấy dịch nó cứ sao sao í?!?*

Một cái thang 3 mét đứng trên mặt đất nằm ngang và đạt 2,8 mét lên một bức tường đỉnh. Chân thang cách chân tường bao xa???

@ Mn nhớ ghi cách giải hoặc đáp án cũg đc nhee! @

                                                                    :D < ~ ~ ~ Cảm Ơn Mn Nhìu Lém Nhoaa ~ ~ ~ > :D                                                                       

2
4 tháng 3 2020

Hình ảnh được vẽ lại bởi họa sĩ siêu tài năng về mảng chém gió Cái thang 3m Tường 2,8m Tính cái này A B C

Gọi ví trí chân tường là C, chân thang là B, đỉnh thang chạm vào tường là A

Vì chân  tường vuông góc với mặt đất \(\Rightarrow AC\perp BC\)

Áp dụng định lí Py-ta-go trong tam giác ABC ( \(AC\perp BC\)) ta có :

\(AB^2=AC^2+BC^2\Rightarrow3^2=2,8^2+BC^2\Rightarrow BC^2=9-7,84=1,16\)

\(\Rightarrow BC=\sqrt{1,16}\)( m )

Thật ra cái này tớ cũng không chắc lắm !

4 tháng 3 2020

~Cảm ơn pạn nhìu lém!!!~               *~Arigatou Gozaimasu~*

31 tháng 8 2019

Một  tòa nhà có chiều dài 6 mét và cao 4 mét. Có 2 cửa sổ trên tường. Cả hai  cửa sổ đều có cùng kích thước cao 1,5 mét và rộng 1 mét. Mỗi mét vuông của bức tường cần 17 viên gạch. Tổng cộng có bao nhiêu viên gạch?

25 tháng 3 2019

1.b

2.a

3.d

25 tháng 3 2019

cảm mơn

8 tháng 10 2018

1.What is your age?

-I'm ten (years old)

2.What is her family name?

-It's Nguyen

3.What is his weight?

-It's 45 kilos

4.What is your brother's height?

-It's...

2 tháng 12 2018

1 : What is your age ?

I am ten / My age is ten

2 : What is her family name ?

Her family name is Nguyen

...

Mới lớp 5 thôi 

Biết mỗi thế 

Hk tốt !!

2 tháng 12 2018

1. What is your age?

-> I am ten.
2. What is her family name?
-> Her family name is Nguyen.

3. What is his weight?
-> His weight is 45 kilos.
4. What is your brother's height?
-> My brother's height is one metter and seventy centimeters.
5. What is the length of the river? 

-> It's about 300 miles 

6. What is the heght of the wall ?
-> It's about four meters.

7. What is the depth of the lake? 
-> It's about five meters.

8. What is the width of the cloth?
 -> It's one meter and sixty centimeters.
P/s : Không biết đúng không nữa :v

26 tháng 2 2020

Make the question with "what" and answer the questions:

1. your age/ ten

⇒what is your age?

It is ten

2. her family name / Nguyen

⇒what is her family name?

It is Nguyen

3. his weight/ 45 kilos

⇒what is his weight?

It is 45 kilos

4. your brother' s height / one meter seventy centimeters

⇒what is your brother's height?

It is one meter seventy centimeters

5. the length of the river / about 300 miles

⇒ what is the length of the river ?

It is about 300 miles

6. the height of that wall / four meters

⇒what is the height of that wall ?

It is four meters

7. the depth of the lake / about five meters

⇒what is the depth of the lake ?

it is about five meters

8. the width of the cloth / one meter sixty centimeters

⇒what is the width of the cloth ?

It is one meter sixty centimeters
2 tháng 12 2018

1. What’s your age?

I’m ten.

2. What’s her family name?

Her family name is Nguyen.

3. What’s his weight?

His weight is 45 kilos/He weights 45 kilos.

4. What’s your brother's height?

My brother’s height is one meter and seventy centimeter.

5. What’s the length of the river?

It’s about 300 miles.

6.What’s the hight of the wall

It’s four meter.

7. What’s the depth of the lake

It’s about five meters.

8.What’s the width of the cloth?

The width if the cloth is one meter and sixty centimeters

It happened(23)___________ a Sunday morning just before the Chinese New Year. I(24) ________ to decorate our living room with paper lanterns and other colorful decorations. To put these decorations , I had to(25) _________ a ladder. However, I went to the storeroom (26) ________ brought out the old wooden one that we had. I climbed up to the top rung of the ladder, with a lantern in one ( 27) _________, a pair of scissors in the otherand a reel of thread between my teeth. Just as I was reaching...
Đọc tiếp

It happened(23)___________ a Sunday morning just before the Chinese New Year. I(24) ________ to decorate our living room with paper lanterns and other colorful decorations. To put these decorations , I had to(25) _________ a ladder. However, I went to the storeroom (26) ________ brought out the old wooden one that we had. I climbed up to the top rung of the ladder, with a lantern in one ( 27) _________, a pair of scissors in the otherand a reel of thread between my teeth. Just as I was reaching out to tie the lantern to a nail high on the wall, the step of the ladder(28) __________ me gave way. Taken completely by surprise, I fell to the floor with a heavy thump. I felt a sharp pain on my back as well as on my ankle

23/ A. in B. on C. from D. for

24/ A. decided B. wanted C. needed D. must

25/ A. use B. get C. take D. need

26/ A. but B. and C. so D. though

27/ A. hand B.bag C. box D. can

28/ A. for B. with C. under D. to

2
9 tháng 1 2018

It happened(23)___________ a Sunday morning just before the Chinese New Year. I(24) ________ to decorate our living room with paper lanterns and other colorful decorations. To put these decorations , I had to(25) _________ a ladder. However, I went to the storeroom (26) ________ brought out the old wooden one that we had. I climbed up to the top rung of the ladder, with a lantern in one ( 27) _________, a pair of scissors in the otherand a reel of thread between my teeth. Just as I was reaching out to tie the lantern to a nail high on the wall, the step of the ladder(28) __________ me gave way. Taken completely by surprise, I fell to the floor with a heavy thump. I felt a sharp pain on my back as well as on my ankle

23/ A. in B. on C. from D. for

24/ A. decided B. wanted C. needed D. must

25/ A. use B. get C. take D. need

26/ A. but B. and C. so D. though

27/ A. hand B.bag C. box D. can

28/ A. for B. with C. under D. to

9 tháng 1 2018

It happened(23)___________ a Sunday morning just before the Chinese New Year. I(24) ________ to decorate our living room with paper lanterns and other colorful decorations. To put these decorations , I had to(25) _________ a ladder. However, I went to the storeroom (26) ________ brought out the old wooden one that we had. I climbed up to the top rung of the ladder, with a lantern in one ( 27) _________, a pair of scissors in the otherand a reel of thread between my teeth. Just as I was reaching out to tie the lantern to a nail high on the wall, the step of the ladder(28) __________ me gave way. Taken completely by surprise, I fell to the floor with a heavy thump. I felt a sharp pain on my back as well as on my ankle

23/ A. in B. on C. from D. for

24/ A. decided B. wanted C. needed D. must

25/ A. use B. get C. take D. need

26/ A. but B. and C. so D. though

27/ A. hand B.bag C. box D. can

28/ A. for B. with C. under D. to