999 multiplied by 888

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Acompany is making new soccer uniforms for a team. the company uses 2.5 yards of fabric for each shirt. the company uses 82.5 yards of fabric to make shirts and shorts for 15 players. the equation and solution below represents the situation. 15(2.5+x)=82.5; x=3 what does the solution, x=3, represent?

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

What value of x will make the triangles similar by the sss similarity theorem?