exam Maths Puzzle Numerical Ability

Solve by graphing.Tell wheter system is independent,inconsistent,or dependent.

2x- 3y = 12

3y - 2x = - 12

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exam Other Question

Can you please help me understand how you find the square root of 78? Can you please help me solve this equation? I appreciate all your help here.

4/a^2-1 / 1/2a+2 (divide)

Thank you in advance for all your help.