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obito
obito

obito
Học tại trường Chưa có thông tin
Đến từ Hà Tĩnh , Chưa có thông tin
Số lượng câu hỏi 8
Số lượng câu trả lời 72
Điểm GP 6
Điểm SP 106

Người theo dõi (32)

jackson
jackson
Nguyễn Duy Thiên Bảo
Nguyễn Duy Thiên Bảo
Trần Hải Đăng
Trần Hải Đăng
LEKHANHXUAN
LEKHANHXUAN
Cô Nàng Song Tử
Cô Nàng Song Tử

Đang theo dõi (16)

Cô Nàng Song Tử
Cô Nàng Song Tử
Nguyễn Thị Ngọc Bảo
Nguyễn Thị Ngọc Bảo
Nhã Yến
Nhã Yến
Trần Ngọc Bích
Trần Ngọc Bích
Nguyễn Thị Hà Linh
Nguyễn Thị Hà Linh

obito
obito
obito

Câu trả lời:

Hiệu là:

16 - 4 = 12 (m)

Tổng là:

152 : 2 = 76 (m)

Chiều dài là:

(76 + 12) : 2 = 44 (m)

Chiều rộng là:

76 - 44 = 32 (m)

Diện tích là:

44 x 32 = 1408 (m2)

Đáp số : 1408 m2
obito

Câu trả lời:

In the great inventions of the human race that I like, and i see it's the most useful for everyday life is the internet. Whenever we use any internet-related service, it is a handy, useful to infinity. Many people insist that they will not be able to live without internet tools. We use them daily to share information, do exercise, communicate and even make a living. It seems that the development of this tool has completely changed the distance between people, all sources information seem to have no limit to the internet. This is my opinion and how about you, tell me about your favorite invention!

GOOK LUCK!
obito

Câu trả lời:

How to make a sausages Material: Pork: 1kg (Choose lean lean meat - if the meat is lean, the sausage will be slightly dry). + Powdered Powder: 30g + Baking powder: 5g + Sugar: 10g + Fish sauce: 40ml Salt: a little + Cold boiling water: 50ml + Banana leaves, strands to wrap. Making: - Pork after cleansing, chopping all spices (except water) and put in the freezer for 2 hours. - Use the blender, grind the meat and cover it back into the freezer two hours. - Then continue to bring the meat to grind, just grind and add a little water. At this time you get a mixture of "live spring" to smell fragrant and very smooth. - Next is the package step. Banana leaves after cutting, rinse can leave on the pot boiling water to chewy leaves, easy to pack. - Place the ribbon on the bottom, spread 4, 5 layers of banana leaves up. Then, "live" to spread the stakes to package. Roll the long tube, then fold one end, put the "live" down and then the other end of the string and tied back like a packet of bread. Đây là bài làm của mình. Mình không viết qua 5 bước và không chắc chắn nó hay nên xin bạn thông cảm!
obito

Câu trả lời:

I think people might still say BTS can not sing.
In fact, there is a very good harmony among BTS members. They highlighted the rap because they were a hiphop group but they added emotional vocals instead of vocals full of internal strength and that was of course balanced but the bad guys would assume that the singer Not screaming high notes are bad singers..but I think BTS does not intend to make the vocals stronger. I think they balance each other very well now and I feel sorry for them when someone says they are incompetent, they are a very talented team. Each time I hear them sing, I feel the life is flooding in me,which they bring for me is inspiration. Thanks you, BTS

không hay lắm, bạn thông cảm!
obito
obito

Câu trả lời:

a. x2−6x+10=x2−2.x.3+9+1=(x−3)2+1

Ta có: (x−3)2≥0 với mọi x nên (x−3)2+1>0 mọi x

Vậy x2−6x+10>0 với mọi x

b. 4x−x2−5=−(x2−4x+4)−1= −(x − 2)2− 1

Ta có: (x−2)2≥0 với mọi x ⇒−(x−2)2≤0 mọi x

⇒−(x−2)2−1<0 với mọi x

Vậy 4x−x2−5<0 với mọi x
obito

Câu trả lời:

a. Biến đổi vế trái:

(a+b)(a2−ab+b2)+(a−b)(a2+ab+b2)=a3+b3+a3−b3=2a3

=>VT bằng VP (đpcm)

b. Biến đổi vế phải:

(a+b)[(a−b)2+ab]=(a+b)[a2−2ab+b2+ab]

=(a+b)(a2−ab+b2)=a3+b3

=>VP bằng VT (đpcm)

c. Biến đổi vế phải:

(ac+bd)2+(ad−bc)2=a2c2+2abcd+b2d2+a2d2−2abcd+b2c2

=a2c2+b2d2+a2d2+b2c2=c(a2+b2)+d2(a2+b2)=(a2+b2)(c2+d2)

=>VP bằng VT (đpcm)
obito

Câu trả lời:

Số tự nhiên a chia cho 5 dư 4 ⟹a=5k+4 (k∈N)

Ta có: a2=(5k+4)2=25k2+40k+16=25k2+40k+15+1

=5(5k2+8k+3)+1

=5(5k2+8k+3)+1⋮5

Vậy a2=(5k+4)2 chia cho 5 dư 1