exam Maths Puzzle Numerical Ability

Simplify. (Multiply)

( -5 {{{ sqrt x + sqrt y }}} )({{{ sqrt (x-4) sqrt (y)}}} )

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exam Other Question

A sample of 25 concession stand purchases at the October 22 matinee of Bride of Chucky showed
a mean purchase of $5.29 with a standard deviation of $3.02. For the October 26 eveni Determine two solutions of the equations and use the points to determine the slope of the line.

Problem 39: x+2y=0