Giúp e câu 10 với ah
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DT
0
UH
0
13 tháng 1
1. My daughter has learnt English for two years.
_ My daughter started....learning English 2 years ago ..............................................................................
2. Although Tuan took a taxi, he still arrived late for the interview.
_ In spite of........having taken a taxi, Tuan still arrived late for the interview. .........................................................................................
3. My brother works in a factory which has more than a thousand employees.
_ There are......more than a thousand employees in my brother's company ............................................................................................
4. Nam and his family went on a trip to their home village for two days.
_ Nam and his family had a two-day trip to their home village. ............................................................................
5. Keeping the environment clean is very important.
_ It's....very important to keep the environment clean. ........................................................................................................
6. They will show the time machine to the public when they finish it.
_ The time machine......will be shown to the public when it is finished. .................................................................................
7. Old car tires are recycled to make shoes and sandals.
_ People recycle old car tires to make shoes and sandals.
........................................................................................................
8. It’s three years since I last saw her in this city.
_ I haven’t seen her in this city for 3 years.
....................................................................................................
9. Tam doesn’t type as fast as she used to.
_ Tam used.to type faster than she does now
..................................................................................................
10. “ Please turn down the radio for me'’, said my father.
_ My father asked......me to turn down the radio...................................................................................
DT
Đỗ Thanh Hải
CTVVIP
19 tháng 10 2021
1 lived
2 was watching - rang
3 had gone
4 were- driving
5 had moved
6 hated
7 had already gone
8 saw - were sitting
9 had happened
10 was crossing
H9
HT.Phong (9A5)
CTVHS
7 tháng 5 2023
Câu 8: A
Câu 9: Tóm tắt:
\(A=300J\)
\(t=1p=60s\)
======
\(\text{℘ }=?W\)
Công suất của Nam:
\(\text{℘ }=\dfrac{A}{t}=\dfrac{300}{60}=5\left(W\right)\)
17 tháng 10 2023
2: x+13 là bội của x-1
=>\(x+13⋮x-1\)
=>\(x-1+12⋮x-1\)
=>\(x-1\inƯ\left(12\right)\)
mà x-1>=-1(vì x là số tự nhiên)
nên \(x-1\in\left\{-1;1;2;3;4;6;12\right\}\)
=>\(x\in\left\{0;2;3;4;5;7;13\right\}\)
3: 4x+9 là bội của 2x+1
=>\(4x+9⋮2x+1\)
=>\(4x+2+7⋮2x+1\)
=>\(2x+1\in\left\{1;7\right\}\)
=>\(x\in\left\{0;3\right\}\)
13 tháng 5 2023
b: BE>BC+CE
=BC+1/2CH
=BC+1/2*1/2(HB+HC)
=BC+1/4(HB+HC)>BC+1/4BC
=>BE>5/4BC>3/BC
Câu 10:
(1) CH3COOH + Na -> CH3COONa + 1/2 H2
(2) CH3COOH + NaOH -> CH3COONa + H2O
(3) CH3COOH + C2H5OH \(⇌\) CH3COOC2H5 + H2O (đk trên mũi tên phản ứng là H+ và nhiệt độ)