exam Maths Puzzle Numerical Ability

Use the quadratic formula to solve the following equations

x^2 + 16x + 53 = 0

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exam Other Question

Find the Least Common Multiple of the numbers or monomials.

23.8,18

Any help with this equation would be greatly appreciated:) Write 0.06 as a percent.
Sorry people I am really bad with percents. Would it simply be 6%? Or does the zero have to be in there too? Reading .06%? Help please.