book Maths Puzzle Numerical Ability

Determine Slope. A man decends 1800 feet of elevation @ 3.25 miles horizontally away from the top of the mountain. What is the slope of decent

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book Other Question

find the mistake in the problem and fix it.
if y = 30 and h = 2

6(30) 6+2-5
6y h+6-5
6(15)+6-5
90+6-5
96-5
91
How does one write the complex conjugate for -2+3i?