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DT
1
O
25 tháng 3 2022
a) \(\dfrac{3}{4}+\dfrac{9}{5}\div\dfrac{3}{2}-1=\dfrac{3}{4}+\dfrac{18}{15}-1=\dfrac{39}{20}-1=\dfrac{19}{20}\)
b) \(\dfrac{6}{7}\cdot\dfrac{8}{13}+\dfrac{6}{13}\cdot\dfrac{9}{7}-\dfrac{4}{13}\cdot\dfrac{6}{7}=\dfrac{48}{91}+\dfrac{54}{91}-\dfrac{24}{91}=\dfrac{48+51-24}{91}=\dfrac{78}{91}=\dfrac{6}{7}\)
c) \(\dfrac{-3}{7}+\left(\dfrac{3}{-7}-\dfrac{3}{-5}\right)\)\(=\dfrac{-3}{7}+\left(\dfrac{-3}{7}-\dfrac{-3}{5}\right)=\dfrac{-3}{7}+\dfrac{6}{35}=-\dfrac{9}{35}\)
giúp mình với mình cần gấp và mình cần lời giải bài này
25 tháng 12 2021
a: Xét tứ giác AEHF có
\(\widehat{AEH}=\widehat{AFH}=\widehat{FAE}=90^0\)
Do đó: AEHF là hình chữ nhật
BH
12
17 tháng 3 2022
TL:
Sai nhé bạn
Bạn k cho mik cái đi nhé
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HT
BH
1
DT
Đỗ Thanh Hải
CTVVIP
8 tháng 10 2021
1 How long do you live in HN
2 How often did you go to the movies
3 What did Mrs Robinson buy
4 When was your father in Nghe An
5 How do they go to school
6 Why didn't she go to class
7 Who left home at 7o'clock yesterday
8 What subject does he study in the high school
9 What is your favorite hobby
10 How far is it
NP
0
Ex4:
1. shorter
2. thinner
3. older
4. younger
5. longer
6. taller
7. bigger
8. smaller
9. hotter
10. higher
Ex5:
1. faster
2. taller
3. shorter
4. smaller
5. younger
6. hotter
7. older
8. stronger
Ex6:
1. The goat is smaller than the horse.
2. Snakes are longer than dogs.
3. The giraffe is taller than the zebra.
4. The elephant is bigger than the monkey.
5. The donkey is faster than the cow.
Ex7:
1. What does your mother look like?
2. What do they look like?
3. Is he tall?
4. What does he look like?
Ex8:
1. What does your English teacher look like?
2. She is young and beautiful.
3. What does your father look like?
4. He is tall and slim.
5. Who is taller, your father or you?