Question If two sides of a scalene triangle have lengths 3 and 5, the perimeter of the triangle could be which of the following?I. 13II. 14III. 16A) I onlyB) II onlyC) III onlyD) II and III onlyE) I and II onlyCorrect Answer : Choice B. II only.Explanatory AnswerThe triangle mentioned in the question is a scalene triangle.i.e., the measure all 3 sides of the triangle are … [Read more...] about SAT Geometry : Scalene Triangles

## SAT Coordinate Geometry : Equation of a Line

Question In the x-y plane, line l is perpendicular to line k. If the equation of line k is 3x - 7y = 21, what is the equation of line l if contains the point (0, 4)?(A) 3x + 7y = 4(B) 7x - 3y = 12(C) 7x + 3y = 4(D) 7x + 3y = 12(E) 7x + 3y = 28Correct Answer : Choice D. 7x + 3y = 12Explanatory AnswerEquation of line k is 3x - 7y = 21.Let us express the equation of line k in the … [Read more...] about SAT Coordinate Geometry : Equation of a Line