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Những câu hỏi liên quan
22 tháng 4 2022
B
How the weather today ?
What is the date today ?
What is your phone number ?
Minh Anh - Vegetables - sweet - kitten - to do my homewworks
bài 4 mik ko bt lm
10 tháng 12 2024
Bài 1
- The life in the city is very convenient
- The city has many interesting places , such as : park , museum , stadium , ....
- - The buildings in the city centre is very modern
- In the city , there are some park so we can walking , do exercise , play ...
- The street in city is cleaner than the street in countryside
Bài 2
+ The city is very noisy
+ The city's street hasn't a lot os trees
+ There are many means on the road , so the air is polluted
+ City is very cramped
+ I don't like to go anywhere because the city is too dirty by dust
<< Tick cho mình rồi khi nào mình lại giúp , cảm ơn ạ >>
23 tháng 2 2021
thi toi da ko bi nguoi khac che cuoi
Neu no cham hoc thi no da lam dc bai tap kho nay
anh se ko bi tai nan giao thong neu nhu anh ko vuot au
QT
Quoc Tran Anh Le
Giáo viên
22 tháng 9 2023
Gọi E là biến cố “Người không thành thạo cả hai thứ tiếng Anh hay Pháp”.
Khi đó \(\overline E \) là biến cố “Người thành thạo tiếng Anh hoặc Pháp”.
Ta có \(\overline E = A \cup B.\)
\( \Rightarrow P\left( E \right) = 1 - P\left( {\overline E } \right) = 1 - P\left( {A \cup B} \right) = 1 - \frac{{47}}{{50}} = \frac{3}{{50}}\)
Vậy xác suất để người được chọn không thành thạo cả hai thứ tiếng Anh hay Pháp là \(\frac{3}{{50}}.\)
Đáp án B.
Sử dụng dữ kiện sau để trả lời các câu hỏi trong các Bài 8.20, 8.21.
Một lớp có 40 học sinh, trong đó có 23 học sinh thích bóng chuyền,18 học sinh thích bóng rổ, 26 học sinh thích bóng chuyền hoặc bóng rổ hoặc cả hai. Chọn ngẫu nhiên một học sinh trong lớp.
QT
Quoc Tran Anh Le
Giáo viên
22 tháng 9 2023
Gọi A là biến cố “Người thành thạo tiếng Anh”; B là biến cố “Người thành thạo tiếng Pháp”.
Khi đó \(P\left( A \right) = \frac{{31}}{{50}},P\left( B \right) = \frac{{21}}{{50}},P\left( {AB} \right) = \frac{5}{{50}} = \frac{1}{{10}}\)
Ta có \(P\left( {A \cup B} \right) = P\left( A \right) + P\left( B \right) - P\left( {AB} \right) = \frac{{31}}{{50}} + \frac{{21}}{{50}} - \frac{1}{{10}} = \frac{{47}}{{50}}\)
Vậy xác suất để người được chọn thành thạo ít nhất một trong hai thứ tiếng Anh hoặc Pháp là \(\frac{{47}}{{50}}.\)
Đáp án A
8
KY
3 tháng 8 2021
If John is late, we will wait for him.
If it rains, we will cancel the trip
If I have time, I will watch a movie.
If we don't hurry up, we will miss our flight.
Katy will be mad if Sam is late again.
Last night I played my guitar loudly and the neighbors complained.
She kissed me on the cheek.
It rained yesterday.
Angela watched TV all night.
John wanted to go to the museum.
We were just talking about it before you arrived.
He wasn’t working when his boss came yesterday.
Was your mother going to the market at 7 A.M yesterday?
When I was singing in the bathroom, my mother came in.
The man was sending his letter in the post office at that time.
It has been 2 months since I first met him.
I have watched TV for two hours.
She has prepared for dinner since 6.30 p.m.
He has eaten this kind of food several times before.
Have you been to that place before?
They have worked for this company for 5 years
DT
Đỗ Thanh Hải
CTVVIP
3 tháng 8 2021
Đk loại 1
If I am hungry, I will get something to eat.
If I don’t see him this afternoon, I will phone him in the evening.
If it rains we may get wet
If John has the money, he will buy a Ferrari
She’ll be cold if she doesn’t wear a coat
Quá khứ đơn:
I was at my uncle’s house yesterday afternoon.
They didn’t accept our offer.
We vistied Australia last summer
Did Cristiano play for Manchester United
What did you do last Sunday?
Quá khứ tiếp diễn:
He was cooking dinner at 4 p.m yesterday.
They were playing soccer when I came yesterday
He wasn’t working when his boss came yesterday.
We weren’t watching TV at 9 p.m yesterday.
Was your mother going to the market at 7 a.m yesterday?
Hiện tại hoàn thành:
I have watched TV for two hours
She has prepared for dinner since 6.30 p.m
He has eaten this kind of food several times before.
We haven’t met each other for a long time.
He hasn’t come back to his hometown since 2000.
CH
0
1 If you happen to find my wallet, could you let me now?
2 If it hadn't been for the night-watchman, the fire wouldn't have been brought under control
3 If it hadn't been for his refusal to work overtime, Jane would have got promotion
4 Should you happen to see Helen, could you ask her to call me
5 Don't be late one more time or you will be fined