exam Maths Puzzle Numerical Ability

What is the square root of 3sqrt7/12?

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exam Other Question

A circle whose equation is (x+5)^2+(y+3)^2 is stretched by a factor of 1/4. What is the new equation? I don't have a problem to solve I just need some information on a couple of questions I have:
1) How do you compute the intercepts of a quadratic function?

2) What is the numbe