Mọi người giúp mình bài tập này với ạ!
1. I'd rather to cook the meal than do the washing up.
A. to cook B. than C. do D. washing up
2. The weather was awful so we couldn't be able to go sailing
A. awful B. so C. couldn't be able D. sailing
3. Frank did very well on the test; he should have studied very hard before it.
A. very well B. on the test C. should have D. before it
4. He spoke rather quickly but I could able to understand what he said
A. rather quickly B. could able C. what D. he said
5. When I was younger I can run ten kilometers every morning
A. When B. younger C. can run D. every morning
6. It was very dark, but I can make out a figure moving in front
A. I can B. make out C. moving D. in front
7. The computer went wrong, but luckily Emma is able to put it right again
A. wrong B. luckily C. is able D. it right
8. You don't know where the meeting is, isn't it?
A. know B. where C. the meeting is D. isn't it
9. I haven't got the letter Helen sent me and I wonder if it should have been wrongly delivered.
A. Helen sent B. if it C. should D. wrongly delivered
10. Jill mustn't have arrived yet, otherwise she would have phoned me
A. mustn't B. yet C. otherwise D. would have
11. I'm sure I would receive a bonus from the company soon.
A. would B. a bonus C. from D. soon
12. I didn't hear the phone ring; I must be in the garden at the time
A. hear B. ring C. must be D. at the time
13. You shouldn't have seen Jeanne yesterday because she's been on holiday abroad for a week now
A. shouldn't B. because C. she's been D. for a week now
14. You hadn't better tell anyone this information; it's confidential.
A. hadn't better B. tell anyone C. this information D. confidential
15. " Would you like to travel by air?" " No, I'd rather to go by train"
A. to travel B. by air C. to go D. by train
16. You had better not to keep anything valuable in your hotel room in case it gets lost
A. to keep B. anything valuable C. in case D. get losts
17. The law requires that anyone working in restaurants must have a medical check-up twice a year A. working B. must have C. medical check-up D. twice a year
18. If only I hadn't been ill then, I'll have helped you solve the problem.
A. hadn't been B. then C. I'll have D. solve
19. We'd better follow the instructions on this packet, wouldn't we?
A. follow B. instructons C. on this packet D. wouldn't
20. I would rather you should stop whistling while I'm talking.
A. should stop B. whistling C. while D. I'm talking
MONG MỌI NGƯỜI GIÚP ĐỠ. NẾU ĐƯỢC MỌI NGƯỜI GIẢI THÍCH GIÚP Ạ
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\(R_{tđ}=\dfrac{R_1\cdot R_2}{R_1+R_2}=\dfrac{24\cdot12}{24+12}=8\Omega\)
\(I=\dfrac{U}{R}=\dfrac{12}{8}=1,5A\)
\(P=\dfrac{U^2}{R}=\dfrac{12^2}{8}=18W\)
\(Q_{tỏa1}=A_1=U_1\cdot I_1\cdot t=12\cdot\dfrac{12}{24}\cdot1\cdot3600=21600J\)
\(Q_{tỏa2}=A_2=U_2\cdot I_2\cdot t=12\cdot\dfrac{12}{12}\cdot1\cdot3600=43200J\)
Từ 0 đến 1 được chia thành 10 phần bằng nhau.
Giá trị của mỗi phần là: \(\dfrac{1}{10}\)
Từ lập luận trên ta có:
Số thích hợp để điền vào các ô trống lần lượt là:
10; 5; 6; 9; 10
0 ; 1/10 ; 2/10 ; 3/10 ; 4/10 ; 5/10 ; 6/10 ; 7/10 ; 8/10 ; 9/10 ; 1
Chúc bạn học tốt!
Bài 2:
a) Để hàm số đồng biến thì m+1>0
hay m>-1
b) Để hàm số đi qua điểm A(2;4) thì
Thay x=2 và y=4 vào hàm số, ta được:
\(\left(m+1\right)\cdot2=4\)
\(\Leftrightarrow m+1=2\)
hay m=1
c) Để hàm số đi qua điểm B(2;-4) thì
Thay x=2 và y=-4 vào hàm số, ta được:
\(2\left(m+1\right)=-4\)
\(\Leftrightarrow m+1=-2\)
hay m=-3
Bài 1:
b) Ta có: \(5\cdot\sqrt{25a^2}-25a\)
\(=5\cdot5\cdot\left|a\right|-25a\)
\(=-25a-25a=-50a\)
Mọi người giúp em tham khảo bài tập về nhà này với ạ
Mọi người giúp mình bài tập này với ạ!
1. I'd rather to cook the meal than do the washing up.
A. to cook B. than C. do D. washing up
2. The weather was awful so we couldn't be able to go sailing
A. awful B. so C. couldn't be able D. sailing
3. Frank did very well on the test; he should have studied very hard before it.
A. very well B. on the test C. should have D. before it
4. He spoke rather quickly but I could able to understand what he said
A. rather quickly B. could able C. what D. he said
5. When I was younger I can run ten kilometers every morning
A. When B. younger C. can run D. every morning
6. It was very dark, but I can make out a figure moving in front
A. I can B. make out C. moving D. in front
7. The computer went wrong, but luckily Emma is able to put it right again
A. wrong B. luckily C. is able D. it right
8. You don't know where the meeting is, isn't it?
A. know B. where C. the meeting is D. isn't it
9. I haven't got the letter Helen sent me and I wonder if it should have been wrongly delivered.
A. Helen sent B. if it C. should D. wrongly delivered
10. Jill mustn't have arrived yet, otherwise she would have phoned me
A. mustn't B. yet C. otherwise D. would have
11. I'm sure I would receive a bonus from the company soon.
A. would B. a bonus C. from D. soon
12. I didn't hear the phone ring; I must be in the garden at the time
A. hear B. ring C. must be D. at the time
13. You shouldn't have seen Jeanne yesterday because she's been on holiday abroad for a week now
A. shouldn't B. because C. she's been D. for a week now
14. You hadn't better tell anyone this information; it's confidential.
A. hadn't better B. tell anyone C. this information D. confidential
15. " Would you like to travel by air?" " No, I'd rather to go by train"
A. to travel B. by air C. to go D. by train
16. You had better not to keep anything valuable in your hotel room in case it gets lost
A. to keep B. anything valuable C. in case D. get losts
17. The law requires that anyone working in restaurants must have a medical check-up twice a year A. working B. must have C. medical check-up D. twice a year
18. If only I hadn't been ill then, I'll have helped you solve the problem.
A. hadn't been B. then C. I'll have D. solve
19. We'd better follow the instructions on this packet, wouldn't we?
A. follow B. instructons C. on this packet D. wouldn't
20. I would rather you should stop whistling while I'm talking.
A. should stop B. whistling C. while D. I'm talking