III. 

A. 

1. B

2. C

3. B

4. A

5. D

B. 

1. C

2. B

3. B

4. A

5. C

1 b c b a d

2 c b b a c nha

Đề dài thế này sao giải thích nhanh cho e đc

Part 1

1 C

2 B

3 D

4 C

5 B

6 A

Part 2

1 T

2 F

3 F

4 F

V

1 That old house has just been bought

2 If he doesn't take these pills, he won't be better

3 I suggest taking a train

4 Spending the weekend in the countryside is very wonderful

nhiều thật đấy

Bài 3:

a: \(A=5\cdot\left(-1\right)^3\cdot1^4=-5\)

b: \(B=9\cdot\left(-1\right)^5\cdot2^2=-36\)

b: $B=9\cdot {}^{}\cdot {}^{}=-36$

\(\frac{1x3x5+2x6x10+4x12x20}{1x5x7+2x10x14+4x20x28}\)

\(=\frac{1x5x3+2x10x6+4x20x12}{1x5x7+2x10x14+4x20x28}\)

\(=\frac{3+6+12}{7+14+28}\)

\(=\frac{21}{49}\)

tại sao vậy?? ^.^

bài bạn tiên đúng rồi

ban dang thi a???

\(20,18.7,5+20,18+20,18:2\\ =20,18.\left(7,5+1+0,5\right)\\ =20,18.9\\ =181,62\)

\(20,18\times7,5+20,18+20,18:2\)
\(=20,18\times7,5+20,18\times1+20,18\times0,5\)
\(=20,18\times\left(7,5+1+0,5\right)\)
\(=20,18\times9\)
\(=181,62\)

55 + 55 = 110

SAI RÙI MÁ =110

110 nha bạn 

HT

4/1 x 13/15

= 52/15

52/15

mình có câu trl rồi nhé:

4 x 13/15 = 4 x 13/15 = 52/15 nhé!