exam Maths Puzzle Numerical Ability

A sailboat sail in the shape of an isosceles triangle has a base that is 9 feet longer that either of the equal sides. If the perimeter of the sail is 21 feet, then what is the length of the base of the sail?

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Simplify and (show your work)

Please help with this problem

3/5 divided by 1 and 1/5 x 1 and 2/3

Thanks From Precious identify the axis of symmetry, create a suitable table of values,and sketch the graph including t he axis of symmetry.
y=-x^2+6x-2

i cant figure out how to the the table of values can someone please help?