exam Maths Puzzle Numerical Ability

can someone please help me solve this problem? 3(x-2)-5(2x-1)>0. The greater than sign should have a _ under it.

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exam Other Question

the shadow of a tree is 10 meters long, the shadow a meter stick is .4 meters long. how tall is the tree? 25 meters?

do you multiply .4 meters by 10 meters? Or do you convert to feet and divide? 1) What are some uses of polynomials in the "real world"?