Cho tam giác ABC có M là trung điểm BC, biết MA=MB=MC. Chứng minh tam giác ABC vuông tại A

Giúp mk nha!!!!

Viết lại câu

1. I am 15 years old. Minh is 17 years old

I am..................

Minh is..............

2. English subject interest many people.

Many people enjoy...............

Many people are

3. This year my students work harder than last year

My students didn't....................

4.Our parents worked 12 hours a day, but now we work 8 hours a day

We now work............................

5. We learn Engkish well this year , but last year we learned badly

We learn English....................................

6. Iam a slow cyclist

I....................

7. I am a fast typist

I..........................

8.My Tam is a good singer

My Tam sings.......................

9.My dad is a careless driver

My dad doesn't.................

My dad drives................

10. I don't know anybody here

I know.......................

11.She doesn't buy anything in the supermarket

She buys..............................

12.The train often leaves at 8 o'clock in the morning

There is.....................

Giúp mk nha hơi dài 1 xíu

Thực hiện phép tính sau:

a, |-0,75| + \(\dfrac{1}{4}-2\dfrac{1}{2}\)

b, \(15.\dfrac{1}{5}:\left(\dfrac{-5}{7}\right)-2\dfrac{1}{5}.\left(\dfrac{-7}{5}\right)\)

c, \(\dfrac{5}{17}+\dfrac{2}{3}-\dfrac{20}{12}+\dfrac{7}{9}+\dfrac{12}{17}\)

d, \(\dfrac{5}{15}+\dfrac{14}{25}-\dfrac{12}{9}+\dfrac{2}{7}+\dfrac{11}{25}\)

giúp mk nha mk đang cần gấp

Cho hàm số y = ax

a, xét a biết đồ thị hàm số đi qua M(2,1)

b, vẽ đồ thị hàm số vừa tìm được

c, điểm N(6,3) có thuộc đồ thị hàm số không?

Giúp mik nha?//

Chọn đáp án đúng:

1. They returned hom yesterday

a. arrived b. came back c. traveled d. visited

2. ...........did she go to the dentist last week?

a. When b. What c. why d.who

3. You shouldn't eat too much sweet things......... it's not good for your teeth

a. because b. because of c. do d. why

4. I hope that she.........better soon

a. feel b. feels c. to feel d. feeling

5. She had to work..........

a. hard b. hardly c. difficult d. difficulthy

6. I was really happy....... Wark again yesterday

a. see b. to see c. seeing d. to seeing

7. .........are her parents busy now?

a. Why b. Who c. What d. When

8.I......... to see you tomorrow

a. enjoy b. hope c. know d. think

9. Few people like..........on the farm

a. work b. to work c. working d. b&c

10. He's bad.........history

a. in b. to c. at d. for

Giúp mk nhé

Ba ngời cùng nhau góp vốn để kinh doanh với tổng số tiền gớp được là 120.000.000 đồng theo tỉ lệ 3;4;5. Tính số tiền của mỗi người đã góp?

Giúp với mk đang gấp

Tìm x, biết:

a, x -\(\dfrac{3}{5}=\left(-\dfrac{1}{2}\right)^2\)

b, 0,75 - | \(\dfrac{1}{3}x+1\)| = |-0,5|

Giúp mk với