exam
Maths Puzzle
Numerical Ability
HG and EF are bases, HI-height,
If HG=14, HI=2x+2, EF=4x+4, area=170, find x, HI, and EF.
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please help!
simplify
-2/-2^-3 - 3/-3^-2
d/0.2=3d+2.1