Question

solve this question ​

Answer 1

Answer:All the questions from 15 to 19 are solved in the uploaded 5 photos.

Step-by-step explanation:

Answer 2

Answer:

down.....

Step-by-step explanation:

Here,

16.

we take positive numbers as x and y.

so 5 x = y

As the equation, it would be...

2 ( x + 21 ) = y + 21

then,

substituting y = 5x we get....

x = 7.

and y = 5 ( 7 ), y = 35.(Ans)

17.

Taking it as a parallelogram.

it should be x = y = z

and z + 50 = 180,

so, z = 130° = x = y ( Ans)

18.

Here,we divide the A° = 2 D°

now... the solve is given in the pic.

19.

here, in (i)

3x = 18 , so, x = 6

3y - 1 = 26 , so, y = 9

in ( ii)

y + 7 = 20 , y = 13

x + 13 = 16 , x = 3 ( Ans )

20.

The equation is

(2x + 20 ) ÷ 25 = 4

x = (100- 20) ÷ 2

x = 40 ( Ans)

I am done .