exam Maths Puzzle Numerical Ability

Please help me understand how to do this. I am to simplify if possible and solve.

5 to the negative 7 th *5^9 =

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exam Other Question

graph the following equation y =2x^2 Airport B is 200 miles from airport A on a course of 52 degrees.To reach airport C, a plane flies from A on course of 346 degrees or from B on a course 302 degrees.Find the distanc