Mình đang cần gấp, giúp mình vớii, cảm ơn nha.
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
1. I was given a notebook as a reward by my teacher.
2. Grapes are picked and then turned into wine.
3. I wasn't allowed to stay up late by my father.
4. Pencils aren't used in your Maths exam.
5. I was allowed to go picnic with my friends by my parents yesterday.
6. I wasn't told about his story.
7. This cake is made by me.
8. When I was a child, my leg was bitten by a dog.
9. Many social skills are needed when you enter the workplace.
1, I was given a notebook by my teacher as a reward
or A notebook was given to me by my teacher as a reward
2, Grapes are picked and wine is turned into
3, I am not allowed to stay up late by my father
4, pencils are not used in your maths
5, i was not allowed to go picnic with my friends by my parents yesterday
6, i was not told about his story
7, this cake was made by me
8, When I was a kid, my leg was bitten by a dog
9, many social kills are needed when the workplace is entered
\(x\times4+\frac{1}{2}\times x=55,35\)
\(\Leftrightarrow x\times\left(4+\frac{1}{2}\right)=55,35\)
\(\Leftrightarrow x\times4,5=55,35\)
\(\Leftrightarrow x=55,35:4,5\)
\(\Leftrightarrow x=12,3\)
Vậy x= 12,3
x.4+1/2.x=55,35
x.(4+1/2)=55.35
x.9/2=55,35
x=55,35:9/2
x=12,3
vì là máy ko có dấu nhân nên thay dấu nhân là dấu chấm
a: \(=\left(2a^2-3a^2-4a^2\right)+\left(-0.5a-2.5a+3a\right)+\left(5-4+7\right)=-5a^2+8\)
b: \(=\left(a^3-a^3\right)+\left(-2a^2-3a^2+4a^2\right)+\left(a+a-a\right)+\left(-5+4\right)=-a^2+a-1\)
c: \(=-b^4+3b^2-3b-1-b^3+1-3b^2+b^4-5+4b^3+5\)
\(=3b^3-3b\)
a: 1-1/2=1/2
b: 1-3/10=7/10
c:3-1/3=8/3
d: 4-1/9=35/9
e: 8-2/3=22/3
f: 5-2/5=23/5
a: bằng 1 phần 2
b: bằng 7 phần 10
c: bằng 2 phần 3
d:bằng 35 phần 9
e: bằng 22 phần 3
g: bằng 23 phần 5
chúc bn học tốt
Tổng hai phân số ban đầu là
7/9+1/5=35/45+9/45=44/45
CaC2+2H2O->C2H2+Ca(OH)2
C2H2+H2-to>C2H4
C2H2+2H2-to>C2H6
C2H4+Br2->C2H4Br2
n-(CH2=CH2-)--to>-(CH2-CH2)-n