Question

* find the coordinates of the point whose lines ax=by and ay=bx intersect. * sum of two digit number is 12, if 18 is added to the original number, the digits interchange places. give two linear equations to represent this. * a hollow cube of side 4cm contains a solid sphere touching its sides. find the volume of gaps between sphere and the walls.

Answer 1

*both equation intersect in origin so (0,0)
*let number is 10x+y
x+y=12
10x+y+18=10y+x
* gap volume=volume of cube-volume of sphere
=(4)^3-4/3pi. (2)^3
now find answer

Answer 2

Answer:

hope it helps

Step-by-step explanation:

origin (0,0) will be the point where ax=by and ay=bx intersect