Question

point for pear to pear service fast please I will mark branliest who give first answer​

Answer 1

Answer:

Step-by-step explanation:

what is the question tell properly ??

Answer 2

Answer:

Given: x-2y=0

3x+4y=20

We need to find the values of x and y

x-2y=0 ————-(i)

3x+4y=20————-(ii)

Multiplying Equation (i) by 2 we get

2x-2y=0———–(iii)

Solving equations (ii) and (iii) we get,

3x+4y=20

2x-4y=0

_________

5x=20

x=5

Substituting the value of x in equation (i) we get,

5-2y=0

-2y=-5

2y=5

y=5/2

Hence x= 5 and y = 5/2Silver Bromide is exposed to light, it decomposes to silver metal and bromine vapours. 2AgBr (s) -------------------> 2Ag (s) + Br2 (g). In this reactions, pale yellow colour of silver bromide changes to greyish white due to formation of silver metal. The decomposition is due to sunlight or light bulb.