exam Maths Puzzle Numerical Ability

M is the midpoint of QR. Q has coodinates (-3,5) and M has coordinates (7,-9) find the coordinates of R.

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exam Other Question

The average amount customers at a certain grocery store spend yearly is $636.55. Assume the variability is normally distributed. If the standard deviation is $89.46, find the proba Perform the indicated division. Rationalize the denominator if necessary. Then simplify each radical expression.

6-sqrt(20)divided by 2