Giúp e vs ạ. Khó quá
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Khó quá giúp mik vs ạ!!
KY
24 tháng 2 2022
Tham khảo nhe =))
Dùng những từ gợi ý sau để viết các câu hoàn chỉnh.
1. I/ receive/ letter/ uncle/ last week
==>I received a letter from my uncle last week.
2. yesterday/ doctor/ tell/ Hoa/ not/ forget/ brush/ teeth/ every day.
==>Yesterday,the doctor told Hoa not to forget to brush her teeth everyday.
3. I/ tell/ classmates/ my trip/ Tri Nguyen Aquarium/ Nha Trang.
==>I told my classmates about my trip in Tri Nguyen Aquarium in Nha Trang.
4.Yesterday/ I/ toothache/ so/ I/ go/see/ dentist
==>Yesterday I had a tooache so I went to see the dentist.
5. Dentist/ check/his teeth/ and/ tell/ him/not/ worry.
==>Dentist checked his teeth and told him no to worry.
6. She/ always/ get up/ early/ do morning exercises.
==>She always gets up early to do morning exercises.
7. Yesterday/ Minh/ feel/ less/ scared/ after/ Dr. Lai/ check/ his teeth.
==>Yesterday Minh felt less scared after Dr.lai checked his teeth.
8. Tam/ look/ tired/ because/ she/ stay/ late/ last night.
==>Tom looked tired because she stayed late last night.
24 tháng 2 2022
1. I/ receive/ letter/ uncle/ last week
=>I received a letter from my uncle last week.
2. yesterday/ doctor/ tell/ Hoa/ not/ forget/ brush/ teeth/ every day.
=>Yesterday,the doctor told Hoa not to forget to brush her teeth everyday.
3. I/ tell/ classmates/ my trip/ Tri Nguyen Aquarium/ Nha Trang.
=>I told my classmates about my trip in Tri Nguyen Aquarium in Nha Trang.
4.Yesterday/ I/ toothache/ so/ I/ go/see/ dentist
=>Yesterday I had a tooache so I went to see the dentist.
5. Dentist/ check/his teeth/ and/ tell/ him/not/ worry.
=>Dentist checked his teeth and told him no to worry.
6. She/ always/ get up/ early/ do morning exercises.
=>She always gets up early to do morning exercises.
7. Yesterday/ Minh/ feel/ less/ scared/ after/ Dr. Lai/ check/ his teeth.
=>Yesterday Minh felt less scared after Dr.lai checked his teeth.
8. Tam/ look/ tired/ because/ she/ stay/ late/ last night.
=>Tom looked tired because she stayed late last night.
NT
1
23 tháng 10 2023
a: gọi d=ƯCLN(n+4;n+5)
=>\(\left\{{}\begin{matrix}n+5⋮d\\n+4⋮d\end{matrix}\right.\)
=>\(n+5-n-4⋮d\)
=>\(1⋮d\)
=>d=1
b: gọi d=ƯCLN(2n+3;2n+1)
=>\(\left\{{}\begin{matrix}2n+3⋮d\\2n+1⋮d\end{matrix}\right.\)
=>\(2n+3-2n-1⋮d\)
=>\(2⋮d\)
mà 2n+3 lẻ
nên d=1
NQ
0
VM
mọi người giúp e với hnay e gặp quá nhiều bài khó nên rất nguy mong mọi người giúp đỡ ạ
2
6 tháng 2 2022
a: =>x-4=0 hoặc x+5=0
=>x=4 hoặc x=-5
b: =>39/7:x=13
hay x=3/7
c: \(\Leftrightarrow\left(4.5-2x\right)=\dfrac{11}{4}:\dfrac{4}{9}=\dfrac{99}{16}\)
\(\Leftrightarrow2x=-\dfrac{27}{16}\)
hay x=-27/32
d: \(\Leftrightarrow x\cdot\dfrac{19}{15}=684\)
hay x=540
OP
6 tháng 2 2022
a. \(\left[{}\begin{matrix}x-4=0\\x+5=0\end{matrix}\right.\)
\(\Leftrightarrow\left[{}\begin{matrix}x=4\\x=-5\end{matrix}\right.\)
b.\(\Leftrightarrow\dfrac{39}{7}:x=13\)
\(\Leftrightarrow x=13.\dfrac{39}{7}\)
\(\Leftrightarrow x=\dfrac{507}{7}\)
c.\(\Leftrightarrow4,5-2x=\dfrac{99}{16}\)
\(\Leftrightarrow-2x=\dfrac{27}{16}\)
\(\Leftrightarrow x=-\dfrac{27}{32}\)
\(2\overrightarrow{MA}+\overrightarrow{BM}+\overrightarrow{MC}=k.\overrightarrow{BC}\Leftrightarrow2\overrightarrow{MA}+\overrightarrow{BC}=k.\overrightarrow{BC}\)
\(\Leftrightarrow2\overrightarrow{MA}=\left(k-1\right)\overrightarrow{BC}\)
\(\Leftrightarrow\overrightarrow{MA}=\left(\dfrac{k-1}{2}\right)\overrightarrow{BC}\)
\(\Leftrightarrow\overrightarrow{MA}\) cùng phương \(\overrightarrow{BC}\)
\(\Rightarrow\) Tập hợp M là đường thẳng qua A và song song BC
e cảm ơn ạ