5.4mu15.9-4.3mu20.8mu9
5.2mu9.6mu19-7.2mu29.27mu6
Tinh A:B
K
Khách
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DT
Đỗ Thanh Hải
CTVVIP
30 tháng 9 2021
1 What is your hobby?
2 When did you start your hobby
3 Why do you enjoy your hobby
4 How many hours a day do you spend on your hobby
5 What does Jim usually do in his free time
6 How often does he play volleyball
7 Where does he often play volleyball
8 Who does he like to play volleyball with
30 tháng 9 2021
I. Write questions for the underlined parts.
1. A: What is your hobby
B: My hobby is photography.
2. A:When did you started yor hobby
B: I started my hobby five years ago.
3. A:why do you enjoy your hobby
B: I enjoy my hobby because I think it’s creative.
4. A:How many hours a day fo you spend on your hobby
B: I spend two hours a day on my hobby.
5. A:What does Jim ussually do in his free time
B: Jim usually plays volleyball in his free time.
6. A:How often does he play volleyball
B: He plays volleyball three times a week.
7. A:Where does he often play volleyball
B: He often plays volleyball at the court near his school.
8. A:Who does he like to play with
B: He likes to play volleyball with his friends.
DN
1
23 tháng 2 2017
a/b x 4 + 1/6 = 17/6
a/b x 4 = 17/6 + 1/6
a/b x 4 = 3
a/b = 3 : 4
a/b = 3/4
Vậy a:b bằng 3/4 hoặc nếu như số thập phan thì là 0,75
NN
0
DT
1
16 tháng 11 2016
Từ a:b=3:4=>\(\frac{a}{3}\) =\(\frac{b}{4}\)
Áp dụng công thức của dãy tỉ số bằng nhau có
\(\frac{a}{3}\) =\(\frac{b}{4}\) =\(\frac{a.a+b.b}{3.3+4.4}\) =\(\frac{36}{25}\)
=> a=\(\frac{36}{25}\) .3=\(\frac{108}{25}\) và b=\(\frac{36}{25}\) .4 =\(\frac{144}{25}\)
=>\(\frac{a}{b}\) =\(\frac{108}{25}\) :\(\frac{144}{25}\)=\(\frac{108}{144}\) =\(\frac{3}{4}\)
bài này không cần giải đâu bạn vì đề bài đã cho kết quả
a:b=3:4
UH
0
TL
0