a: Xét ΔABE và ΔHBE có 

BA=BH

\(\widehat{ABE}=\widehat{HBE}\)

BE chung

Do đó: ΔABE=ΔHBE

b: Ta có: ΔABE=ΔHBE

nên BA=BH và EA=EH

=>BE là đường trung trực của AH

d: ta có: EA=EH

mà EH<EC

nên EA<EC

a) Xét ΔABE và ΔHBE có:

 BA=BH

∠∠

BE :cạnh chung

Do đó: ΔABE=ΔHBE

b) Ta có: ΔABE=ΔHBE

nên BA=BH và EA=EH

=>BE là đường trung trực của AH

d) Ta có: EA=EH

mà EH<EC

nên EA<EC

sờ swim

A

Thx bro

hỏi j nói luôn

????????????

a , Y = \(\dfrac{20\times4}{35\times5}\) 

     Y = \(\dfrac{4\times4\times5}{35\times5}\)

    Y = \(\dfrac{16}{35}\)

b, \(\dfrac{5\times7}{21\times15}\) = \(\dfrac{y}{9}\)

     \(\dfrac{5\times7}{5\times3\times3\times7}\) = \(\dfrac{y}{9}\)

            \(\dfrac{1}{9}\)             =   \(\dfrac{y}{9}\)

              y = 1

A) Y = \(\dfrac{80}{175}=\dfrac{16}{35}\)

vậy Y ≈ 0,5 ( phần a thì mình chưa rõ nhé, bn có thể viết phân số/ hoặc hỏi thầy cô xem tnao nha )

B) Y/9 = \(\dfrac{35}{315}=\dfrac{1}{9}\)

vậy Y = 1

Last weekend, I did something good for my family that made me feel very happy. On Saturday morning, I saw that my mother was very busy with housework. She had to cook, clean, and do the laundry. I decided to help her by cleaning the floor and washing the dishes. At first, I felt a little tired, but when I saw my mother smiling, I knew it was worth it. Later, my father praised me and said I was becoming more responsible. My younger brother also joined me, and together we finished the work quickly. That day, I learned that even small actions can bring joy to the people we love. Helping my family not only made them happy but also made me proud of myself. I will try to do more good deeds like this in the future.

Hi everyone, my name is Phuong Thao. I will introduce my family to you. Our family has 4 people including my father, my mother, my brother and me. My father is an engineer at a construction site near my home. My father is very busy. He usually had to stand outside all day. So he has a tanned skin. However, one day he still spends time playing with me. My mother is a good housewife. Every day I can eat delicious dishes that I cook. Mother takes care of her family very well. Before I go to bed, my mother usually reads me a story. My brother is 12 years old. I often play with him in my free time so my mom can do other things. I love my family very much.