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Std.: 10thSub. : Mathematics - I (ATime : 2 HoursInstructions :1) All questions are compulsory. 2) Use of calculator is n3) The numbers to the right of the questions indicate full r4) In case of MCQ's [ Q.No.1(A)] only the first attempt wi5) For every MCQ the correct alternative (A), (B), (C) oris to be written as an answer.Q.1 A) For every subquestion 4 alternative answers arand write the alphabet of it.1) If x+y = 7; x = -3 Find value of y.A) 10 B) 4 C) -10 D) - 42) For a quadratic equation 2x² + 3x - 5 = | roots a |
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Answer» Given, To FIND :y=? put , x = -3 x+y = 7 (-3)+y = 7 y = -3+7 y = 4 Ans : B) 4 |
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