Giúp mk với ạ 
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Những câu hỏi liên quan
KV
29 tháng 12 2022
a) ĐKXĐ:
x³ - 1 khác 0
x khác 1
b) A = (5x² + 5x + 5)/(x³ - 1)
= 5(x² + x + 1)/[(x - 1)(x² + x + 1)]
= 5/(x - 1)
Thay x = 7 vào A, ta được:
A = 5/(7 - 1)
= 5/6
Mn giúp mk với mấy câu này với ạ . mk cảm mơn ạ
DT
Đỗ Thanh Hải
CTVVIP
17 tháng 7 2021
1 send - will receive
2 do - will improve
3 find - will give
4 will go - has
5 will go- gets
6 doesn't phone - will leave
7 don't study - won't pass
8 rains - won't have to
9 won't be able - watch
10 can't move - isn't
11 study - will pass
V
giúp mk với ạ . mk cần rất gấp ạ . ngày mai 9h sáng mk nộp rồi ạ
0
DT
Đỗ Thanh Hải
CTVVIP
12 tháng 7 2021
1 me
2 too
3 done
doing
having
4 interested
5 as to
6 standing
when
7 helping
8 too
9 such
a
10 used
11 when
12 shouldn't
13 is - cost
ND
2
4 tháng 1 2022
Áp dụng tính chất của dãy tỉ số bằng nhau, ta được
\(\dfrac{a}{3}=\dfrac{b}{4}=\dfrac{b-a}{4-3}=23\)
Do đó: a=69; b=92
V
violet
Giáo viên
3 tháng 5 2021
Chào em, em tham khảo nhé!
1. won't finish
2. had learnt
3. is
4. didn't rain
5. had gone
6. hadn't told
7. would understand
8. will throw
9. would be
10. will post
11. will go
12. is hitting
13. won't do
14. will make
15. will go
16. go
17. eat
18. was washed
19. will be built
20. was cleaned
Chúc em học tốt và có những trải nghiệm tuyệt vời tại hoc24.vn!
DT
Đỗ Thanh Hải
CTVVIP
14 tháng 7 2021
1 C => hers
2 B => will use
3 D => their
4 A => will be pedaling
5 A => travel
6 C => less
7 D => have they
8 D => than
9 A => worked
10 B => fewer
If I had enough free time, I could help you now
If the coffee hadn’t been too hot, we could have drunk it.
If Mary had worn the raincoat, she wouldn't have got cold
Unless you study harder, you will get bad marks
If Alan hadn't lost our phone number, he would have phoned us
If Mr John hadn't begun smoking cigarettes, he wouldn't have got a bad cold
If Elizabeth hadn't started smoking cigarettes, she wouldn't have got a bad cold
If she hadn't been ill, she could have taken part in this activity
If he spoke clearly, they would understand him
If he had finished his homework, he wouldn't have been punished by the teacher