exam Maths Puzzle Numerical Ability

Find the slope of the line containing points with coordinates (-6,4) and (5,4)

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exam Other Question

There is a pole in a lake. One half of the pole is in the ground, another one third of it is covered with water, and 10ft is out of water. What is the total length of the pole in ft? if a:b=1:3 and b:c=3:4 find a:c?