exam Maths Puzzle Numerical Ability

Please help me solve this equation:

(4)/(m^2-7)=1

Thank you for your help!

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exam Other Question

Hello, could you please help me with this?

Write the equation in slope intercept form.

y+2=-6(x-1)

I appreciate your help and thank you in advance.
If the roof is 7cm from the peak to the eave and the attic space is 3cm high at the peak, how long does each of the pieces of insulation need to be? Round to the nearest tenth.