exam Maths Puzzle Numerical Ability

evaluate as possible

/(4/25) (radical equation)

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exam Other Question

How would you multiply and express product in simplest form?

x^2+5x+4/(x+3)^2 divided by x+1/x^2-9 How do you find the length of arc measurements? This is the problem I am trying to resolve. My answer keeps coming up 4.7 but the answer sheet says 21.5. Please help me understand why my answer is incorrect. Thank You!!!!

162/360 x 15.2(3.14)=