exam Maths Puzzle Numerical Ability

ellipse how do you find the center,foci and vertices of the ellipse equation x^2+14x-3y+67=0?

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exam Other Question

3.7 is it greater that or less than to the number 3.71 ? when a sound travels through water, the distance y in meters that the sound travels in x seconds is given by the wquation y=1440x.

How far does a soun travel underwater in 5 sec