exam Maths Puzzle Numerical Ability

Hi, can you please help me solve this problem.

sketch the graph of: y= /x-2/ -2

the backslashes represent the absolute lines.

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exam Other Question

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)=
Direct

Problem #3

Simplify

(sqrt(20))/(5) minus (1)/(sqrt (5))


Problem #4
Simplify

sqrt ((7)/(100))