Giúp mình với m
K
Khách
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Những câu hỏi liên quan
25 tháng 5 2021
M = 2019 / 2020 + 2020 / 2021 + 2021/ 2019
= ( 1 - 1/2019 ) + ( 1 - 1/2020 ) + ( 1+ 2/2021 )
= 3 - 1/2019 - 1/2020 + 2/2021
A - 3 = - 1/2019 - 1/2020 + 2/2021 > 0
Vậy M > 3
25 tháng 5 2021
Ko bít có làm đúng ko nx nhưng bn cứ tham khảo bài mk nhé !
5 tháng 12 2021
a: Để phương trình có nghiệm duy nhất thì \(\left(m-3\right)\left(m+2\right)< >0\)
hay \(m\notin\left\{3;-2\right\}\)
Để phương trình vô nghiệm thì \(\left\{{}\begin{matrix}\left(m-3\right)\left(m+2\right)=0\\\left(m-3\right)\left(m-1\right)< >0\end{matrix}\right.\Leftrightarrow m=-2\)
Để phương trình có vô số nghiệm thì m=3
NT
1
AH
Akai Haruma
Giáo viên
30 tháng 7 2023
Lời giải:
$(x-15)-x.13=0$
$x-15-x.13=0$
$(x-x.13)-15=0$
$x(1-13)-15=0$
$x.(-12)-15=0$
$x.(-12)=15$
$x=15:(-12)=\frac{-5}{4}$
V
0
AN
1
18 tháng 12 2023
a, Diện tích hình thang cân là
[ 4+(4.3)].5:2=40(cm2)
b, Chu vi hình thang cân là
[4+(4.3)]+(5.2)=26(cm)
Cạnh NP của hình bình hành MNPQ là
(26:2)-4=9(cm)
Đáp số: a,40cm2
b,9cm
20 tháng 1
Add one suitable word to each blank
1. I don't believe that he is your dad as he looks too young to have a son.
2. The fact that you come from the countryside makes you hard to stay here
3. We will share the things that we have with the people who live in poverty
4. If I didn't tell him the truth, it can make him so angry that he will leave me
5. Wherever you go or whatever you do is always worries your parents who care for you much
Rewrite:
1. " Hurry up ! write the last words here " the police said to the man
→ The police urged the man to write the last words here.
2. " I need your fluent English " he said to me
→ He requested my fluent English.
3. " Please, please don't take me anywhere " the thief said to the people
→ The thief pleaded with the people not to take him anywhere.
1 rises - is rising
2 met - is having
3 does your mother work - works - is
4 will go - am not
5 doesn't rain - isn't
6 doesn't do - finishes
7 is - doesn't like living - wants to have - enjoys working
8 is your brother - playing - is
9 enjoy watching - aren't
10 is studying - will have
11 is - received
12 does Hoa have - has
13 to join - am going to visit
14 are - making - have
15 does Hoang leave - goes - has
16 is going to rain
17 is ringing - am having - will answer
18 is coming in - has
19 are - don't go - spend - to make - studies - studied
1 I'm going to
2 meet
3 arrives
4 were - lived
5 will visit
6 I'll
7 wasn't - had