exam Maths Puzzle Numerical Ability

Solve: square root of 2y-3 = 3

Please show work and solution.

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exam Other Question

can someone PLEASE help me solve this system:
{ x+ y-4z=6
{2x-5y+3z=2
{ x-6y+7z=-4
thank you so much! saw a bord 8ft 4 in long into nine equal pieces. if the loss per cut is 1/8 in.,how long will each piece be