HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
thì ra cửa hàng đó bây giờ thời hiện đại mà
Trọng âm
A.more easy B.more easier C.easier D.easiest
2.We always need more players. Why don't you come.........?
A.on B.along C.with D.in
3.My house is............of the school
A.Near B.next C.between D.in front
4.You can come either at 7 o'clock.............half past seven
A.so B.but C.and D.or
5.Lan is a hard-working student. She............to work about 45 hours a week
A.has B.have C.do D.does
1 what is the population of da nang
Nearly 800,000 people
2 which part of the city is more spacious
the city part on the east bank is newew and mor spacious
3 which part of the city is more crowed
the city part on the west bank is more crowed
4 which bridge is the newest
Th HanRver bridge is the newest one now
5 What is non nuoc beach like
Non nuoc beach is one of the most beautiful beaches in the world
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Theo tính chất dãy tỉ số bằng nhau ta có:
\(x+y+z=\frac{x}{y+z-2}=\frac{y}{z+x-3}=\frac{z}{x+y+5}=\frac{x+y+z}{\left(y+z-2\right)+\left(z+x-3\right)+\left(x+y+5\right)}=\frac{x+y+z}{2.\left(x+y+z\right)}=\frac{1}{2}\)
=> x + y +z = 1/2 => y + z = 1/2 - x
\(\frac{x}{y+z-2}=\frac{1}{2}\Rightarrow y+z-2=2x\) => \(\frac{1}{2}-x-2=2x\) => \(-\frac{3}{2}=3x\Rightarrow-\frac{1}{2}=x\)
tương tự, \(\frac{y}{z+x-3}=\frac{1}{2}\Rightarrow2y=z+x-3\) => \(2y=\frac{1}{2}-y-3\) => 3y = -5/2 => y = -5/6
z = 1/2 - (x+y) = \(\frac{1}{2}-\left(-\frac{1}{2}-\frac{5}{6}\right)=\frac{1}{2}-\left(-\frac{8}{6}\right)=\frac{1}{2}+\frac{8}{6}=\frac{11}{6}\)
Good luck (=o^0^o=)
By: Mizki Nyoko
Ko bik mik làm xóa đi chưa? Trình chiếu ak bạn?
Link vào hok thử đêy: https://www.tienganh123.com/lop7-bai5-ly-thuyet-ngu-phap-1/11754-ngu-phap-phan-1-trang-tu-chi-tan-suat-to-be-good-at-to-be-interested-in.html
1. Cuong is visiting his grandparents. He always meets them at weekend.
An adverb of frequency goes before a main verb (except with To Be).
Subject + adverb + main verb
I always remember to do my homework.
He normally gets good marks in exams.
An adverb of frequency goes after the verb To Be.
Subject + to be + adverb
They are never pleased to see me.
She isn't usually bad tempered.
(Trong trường hợp này ko thích hợp)
2. Sắp xếp: Afraid/ have a cold,/ I am/ I/ mum.
=> I am afraid I have a cold, mum.