exam Maths Puzzle Numerical Ability

solve each equation for x

2(x-5)^2=3

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exam Other Question

Find the axis of symmetry.
Y=x^2 + 5x -9

I am not understanding how to find the axis of symmetry and would like some help with this to understand this better. Thanks. A baseball player gets 16 hits in 50 at bats. What percent are hits and what percent are nonhits.