exam Maths Puzzle Numerical Ability

For the other side of the overpasss, the engineers have drawn the plands shown in the
figure. Find the degree measure of the angle maked z.
The following were given:
z-6
3x
z

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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 solve each problem but substitution
y=4x-7
y=2x+9