HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
1. D
2. A
3. B
4. D
1. You can see a beautiful garden from her room
2. My brother is the tallest person in my family
3. He lives very far from his office
4. Will they see their old friends at the party?
5. They often play badminton in the afternoon
6. Farmers grow vegetables and raise cattle
Kẻ MH (H thuộc BC) song song AB cắt EC tại I. Ta có ngay H là trung điểm BC. Do đó I là trung điểm EC. Suy ra tam giác MIE = tam giác MIC. Suy ra góc EMI=CMI. Và AEM=EMI (so le trong) (1)
Lại có tam giác DMC cân tại D nên DMC=DCM, và DCM=CMI (so le trong) (2).
Từ (1) và (2), suy ra: EMD = EMI+CMI+DMC= 3AEM.
Complete the sentence with the correct form of have to and the verbs in brackets:
1. have to follow
2. has to answer
3. don't have to go
4. Do/have to buy
5. has to recycle
6. doesn't have to come
7. have to wear
8. Will/have to do
9. don't have to put
10. have to stop
11. Do/have to take
12. doesn't have to take
13. had to leave
14. didn't have to do
15. won't have to do
Supply the correct tense or form of the in brackets:
1. had
2. causes
3. was worn
4. is giving
5. has travelled/started
6. has
7. will have
8. eating
9. go
10. to use
Ta có : \(3^{105}+4^{105}=27^{35}+64^{35}\)
Ta có : \(27+64=91\) chia hết cho 13
Vậy: \(27^{35}+64^{35}\) chia hết cho 13
Nên \(3^{105}+4^{105}\)chia hết cho 13 (đpcm)
Ta lại có : \(27+64=91\) không chia hết cho 11.
Vậy:\(27^{35}+64^{35}\) không chia hết cho 11.
Nên: \(3^{105}+4^{105}\) không chia hết cho 11 (đpcm)
Nó chẳng qua là bội thôi, chứ bạn đang hỏi số này, sao lại hỏi sang số kia thế? Nếu mà vẫn nhất quyết như vậy thì mình bó tay.
1. aren't
2. is
3. Is
4. doesn't work
5. get
6. does/live
7. are
8. play
9. gets
1. I haven't heard from Simona for seven months
2. My grandmother has become deaf since she was about 60
3. My grandfather hasn't ever gone out for these days
11 đơn vị
\(\frac{x^4+x^3+x+1}{x^4-x^3+2x^2-x+1}\)
\(=\frac{x\left(x+1\right)+\left(x+1\right)}{x\left(x-1\right)+2x^2-2x+x+1}\)
\(=\frac{\left(x+1\right)\left(x+1\right)}{x\left(x-1\right)+2\left(x-1\right)+\left(x+1\right)}\)
Ddeeff sao rồi bạn ko rút gọn được