exam Maths Puzzle Numerical Ability

what is the domain of y=sq.root of (9-x^2) i htink the answer may be x is less than or equal to 3 that is what i got when i worked it out

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exam Other Question

What is the value of the discriminant?

X(squared) - 3x - 12 = 0


The teacher collected the textbooks today, the final is tomorrow.
Suppose that lateral faces VAB, VBC, and VCA of triangular pyramid VABC all have the same height drawn from V. Let F be the point in base ABC that ins closest to V, so that VF is t