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1/4 in =20 miles. how much would 7 inches be on a map? Find all solutions in the interval [0, 2π). (sin x)(cos x) = 0? Determine the magnitude of the spontaneous magnetization of an ising model at zero temperature? Does the catalyst change the amount of energy released in a reaction? If a triangle's vertices are A(-5,1) B(5,8) C(9,3) how can I solve for area, perimeter and angle B?