exam Maths Puzzle Numerical Ability

How do I simplify this and express in scientific notation:

The ratio 35,960,000 miles : 3,664,000,000 miles, the ratio of the distance of the sum from Mercury to its distance from Pluto

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exam Other Question
Solve by completing the square

3x^2 - 4x + 5 = 0 Two sides of a triangle are equal. Each of the two equal sides is twice the length of the third side. The perimeter is 90 meters. Find the length of each side.