Question

plssss
solve it friands​

Answer 1

Answer:

1. we, have 1cm=10mm

so, ratio of 1mm to 1cm=10/1=10;1

thus, option ( B)is correct

2. 3x+5y=9

and 5x3y=7

now, adding the two

3x+5y+5x+3y=9+7

or, 8x+8y=16

or, 8(x+y) =16

or x+y=16/8=2

thus, option (A)is correct