exam Maths Puzzle Numerical Ability

please help. find m(angle sign)x

M(angle symbol)y=72 degrees
M(angle symbol)z=18 degree

thanks foryour help.

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exam Other Question

For what value(s) of k the lines y=(k+1)x-3 and (2k-1)x+1 are parallel and are perpendicular? At exactly what time (to the fraction of a minute) between 7:00 and 8:00 do the hands of a clock form a straight angle?