Chia bình thường thôi mà

chia hộ cái

Theo bài ra: 

\(\hept{\begin{cases}1,5\widehat{A}-5^0=\widehat{B}\\2,5\widehat{A}-5^0=\widehat{C}\end{cases}}\Rightarrow\widehat{B}+\widehat{C}=4\widehat{A}-10^0\)

Mà \(\widehat{A}+\widehat{B}+\widehat{C}=180^0\Rightarrow\widehat{A}+4\widehat{A}-10^0=180^0\Rightarrow\widehat{A}=38^0\)

Làm dc chết liền

giải dùm mình mình rất cảm ơn thank you

500 to day 5cm 

=> 50 to day 0,5 cm

=> 10 to day 0.1 cm

Gaming DDT dung thi k nha Gaming DDT

1 tờ giấy 1 cm thì chứa : 5 : 500 = 0,01 tờ

Một ngăn xếp cao 0,1 cm thì chứa : 0,1 : 0,01 = 10 ( tờ )

\(\left(2x+3\right)\left(x^2+4x-5\right)\)

\(=2x^3+8x^2-10x+3x^2+12x-15\)

\(=2x^3+12x^2+2x-15\)

1,was snowing/was shining.

2,was shoveling/was bringing

Theo mình nghĩ thì:

1. i really enjoyed my holiday last january. While it.........was snowing........(snow) in lowa, the sun ........was shining.....(shine) in Florida

2. While Ted.......was shoveling.....(shovel) snow from his driveway yesterday, his wife....brought...(bring)him a cup of hot chocolate

1) was shining / were singing
2) weren't / were plaing

bạn nam trinh đáp án câu 2 là weren't/ were playing nhé.

Chắc bạn viết thiếu

1.called

2.did not hear

1. i .......was calling..(call) Mr Wilson  AT 9 last night, but he (not be)....wasn't.........at home. He (study)....was studying.........at the library

2.i.........didn't hear...(not hear) the thunder during the storm last night because i...was sleeping.........(sleep)