book Maths Puzzle Numerical Ability

You are on a pleasure cruise through the universe and you crash in the ocean of an unknown planet. Your spaceship floats on the water and its top is 39 feet above the surface of th

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book Other Question

Solve the system by Graphing, addition and substitution methods
4x-4y= -8
y=2+x
Hi! i'm stuck on this problem. Radical and fractional exponents
(3{{{SQRT}}2- 2{{{sqrt}}}3) ^3.

thanks