a: DE=MN=6cm

FE=PN=8cm

MP=DF=10cm

hi

uk ☺️ ☺️ ❤️ ❤️

ờm mik cx v, mà mik cx chả qtâm lắm về mấy chuyện này

5x - 2x = 25 + 19

x ( 5 - 2 ) = 44

x . 3 = 44

x = 44 : 3

x = \(\frac{44}{3}\)

Vậy x = \(\frac{44}{3}\)

( don't k # EXOComingsoon )

5x - 2x = 25 + 19 

3x = 44

x = 44/3

hok tốt

EM MS CÓ LỚP 5 THÔI Ạ !

Nam and Phong are best friend, but Minh is Phong neighbour. One day, three of them were in the garden that was very near to their house. Minh is a very shy and clever guy, so he was reading his book and sat on the grass while Nam and Phong were playing basketball. Both of them were a very successful . After a will, Phong threw the ball to Minh and invited him to join both of them. After Minh made up his mind, he joined them immediately. They taught him how to play basketball. And soon, they became best friends, and often plays basketball together.

Em cảm ơn nhiều ạ! Tick nèk :3

câu 11:

a. \(K_2O\)

b. \(CaSO_4\)

c. \(CO\)

d. \(FeCl_2\)

câu 12: 

biết \(M_{H_2}=1.2=2\left(đvC\right)\)

vậy \(M_X=2.32=64\left(đvC\right)\)

ta có:

\(1X+2O=64\)

\(X+2.16=64\)

\(X+32=64\)

\(X=64-32=32\)

\(\Rightarrow X\) là lưu huỳnh, kí hiệu là \(S\)

\(-23,8\cdot41,9-23,8\cdot67,2+23,8\cdot9,1\)

\(=-23,8\cdot\left(41,9+67,2-9,1\right)\)

\(=-23,8\cdot100\)

\(=-2380\)

-2813,16                          

k cho mk nha