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21 tháng 7 2021

đây là ngữ văn nha bn

31 tháng 1 2022

Do x là UCLN ( 2y + 5 ; 3y + 2 ) nên

2y + 5 chia hết cho x (1)=> 6y + 15 chia hết cho x (3)

3y + 2 chia hết cho x (2)=> 6y + 4 chia hết cho x(4)

Lấy (3) trừ cho (4) ta được 11 chia hết cho x

=> x thuộc Ư(11) mà x > 10 

=> x = 11 

Lấy (2) trừ (1) ta được y - 3 chia hết cho x hay y - 3 chia hết cho 11

Mà y > 10 và y <30> y -3 > 7 và y - 3 < 27> y - 3 =11 hoặc y - 3  = 22 => y = 14 hoặc y = 25

Xét y = 14 => 2y + 5 = 33 và 3y + 2 =44 ( thỏa mãn )

Xét y = 25 => 2y + 5 = 55 và 3y + 2 = 77 ( thỏa mãn )

Vậy x =11 và y =14 hoặc x = 11 và y =25

Đây là Toán mà

25 tháng 8 2020

\(P=\frac{xyz}{z}+\frac{xyz}{x}+\frac{xyz}{y}=xyz\left(\frac{1}{x}+\frac{1}{y}+\frac{1}{z}\right)\ge2.\frac{9}{4}=\frac{9}{2}\)(bđt svacxo)

đây là tìm min nhé 

7 tháng 1 2020

I. Rules of paripation "Help me solve maths"

1. Don't put miscellaneous questions on the forum, only post arles that you can't solve or good questions on the forum;

2. Do not answer miscellaneous, does not match the question content on the forum.

3. Do not "True" on miscellaneous answers to fraud points.

you có phải ng VN ko thế ! nếu là ng VN lm ơn ns tiếng việt nhé

tìm chữ...
Đọc tiếp

tìm chữ i

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ai tìm cũng được

27
6 tháng 12 2018

tìm được

6 tháng 12 2018

1 chữ i ở dòng thứ 2.

Nếu đúng k mk nha!

#G2k3#

8 tháng 10 2021

N đầu tiên

v dầu tiên

8 tháng 10 2021

N và V đầu nha

20 tháng 6 2022

A. Chọn câu trước ý đúng

1. Tìm câu đúng

A . Con ông                           B . Con meo

C . Con lượt ba ngón            D. Con bò

2. Tìm câu sai

A . Con hoẳng

B . Ngoạm

C. Vỗ ì oạp

B . Viết câu

3 . Tìm 2 từ có vần ông

Ông nội, ông ngoại.

C. Điền chữ, dấu

4 . ong/ông

Con ong

Đàn ông

5 . ? / ~

Con hoăng - Con hoẵng

Màu đo - Màu đỏ

Đặt tính dọc thăng - Đặt tính dọc thẳng

Chúc học tốt!

14 tháng 5 2022

C1: D

C2: A

C3: ông ngoại, ông nội

C4: Con ong, Đàn ông

C5: Con hoẳng hay hoẵng cũng ko bt, Màu đỏ, Đặt tính dọc thẳng

21 tháng 10 2018

xấu - đẹp

rộng - dài

vui - buồn

từ: đẹp

câu: cái cây này đẹp quá

k nhé

21 tháng 10 2018

'to' trái nghĩa:'nhỏ'

'thấp' trái nghĩa 'cao'

'sống' trái nghĩa 'chết'

Con trâu này to hơn con trâu kia

8 tháng 7 2018

1 + 1 = 2 

h mình nha bạn 

4 tháng 7 2018

1 + 1 = 2

chúc bn học tốt