a) \(128+x\times24=4400\)

\(x\times24=4400-128\)

\(x\times24=4272\)

\(x=4272:24\)

\(x=178\)

b) \(125\times\left(x-18\right)=8875\)

\(x-18=8875:125\)

\(x-18=71\)

\(x=71+18\)

\(x=89\)

giup minh voi, nhanh len!!! minh can gap lam!!!

2 nha ban chuc hoc tot

1 + 1 = 2

hok vui

tk cho mk nha

1+1=2

chắc ko thể vào đc nữa mất!

B

D

A

1) B \(\dfrac{9}{24}\)
2) D 8 
3) A 3508

B 

D

A

a, Vì a vuông góc với AC

b vuông góc với AC=> a//b

b, ta có a//b-> B2=D1( so le trong )

-> B2=D1=45 độ

mà B2+B1=180(kề bù)-> B1=180-B2=180-45=135 độ

c, ko bt lm:)

Mình cân bằng pt rồi bạn tự chọn tỉ lệ theo cặp chất nhé! :))

1. H₂SO₄ + K₂CO₃ \(\rightarrow\) K₂SO₄  + H₂O + CO₂\(\uparrow\)

2. Fe + 2HCl \(\rightarrow\) FeCl₂ + H₂

3, 2Al + 3PbCl₂ \(\rightarrow\) 2AlCl₃ + 3Pb

1. Lan said she was working in Hanoi then

2. Binh said he needed a new bicycle

3. Mary said her English teacher was very humorous

4. My younger brother said he didn't want to stay at home then

5. Binh said Mr.Thanh could speak two languages well

6. Miss Hang said she would go on a picnic to Nha Trang the next day

7. Tom said he didn't know who she was

8. Mai told us that it was raining heavily outside

9. He said to his friend that he had to go home then

10. Hoa said she couldn't go out after 8 p.m

________

II

1. Lan asked Hoa if she could speak French well

2. I asked Mai if she was free that night

3. Nhi asked Mai if she liked listening to pop music

4. She asked me if she lived near there

5. A tourist asked me if I could tell her the way to the nearest post office

vcl