exam Maths Puzzle Numerical Ability

A 60 ft. pipe is divided into three peices. One peice is twice a long as the shortest peice, and the third peice is 4 feet less than five times the shortest peice. Find the length of the shortest peice.

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exam Other Question

Please help me with this equation!
If: z = 6(cos 205 degrees + i sin 205 degrees) and w = 3(cos 85 degrees + i sin 85 degrees), find z/w in polar form.

Thank you, Tami Please help write an equation for this:

x -2 -1 0 1 2
f(x) -5 -2 1 4 7

Thanks.