Page 1 Summative Assessment-1 2014-2015 Mathematics Class â€“ X Time allowed: 3:00 hours Maximum Marks: 90 General Instructions: a) All questions are compulsory. b) Question paper contains 31 questions divide into 4 sections A, B, C and D. c) Question No. 1 to 4 are very short type questions, carrying 1 mark each. Question No. 5 to 10 are of short answer type questions, carrying 2 marks each. Question No. 11 to 20 carry 3 marks each. Question No. 21 to 31 carry 4 marks each. d) There are no overall choices in the question paper. e) Use of calculator is not permitted. Section A Question numbers 1 to 4 carry 1 mark each. 1. If ABC RPQ ? ? ~ , AB=3cm, BC=5cm, AC=6cm, RP=6cm and PQ=10cm, then find QR. 2. Express cos 48 tan88 ec ° + °in terms of t-ratios of angles between 0° and 45°. 3. In PQR ? , if 90 Q ? = ° and 3 sin 5 R = , then find the value of cos P. 4. In the frequency distribution, if 50 i f = ? and 2550 i i f x = ? , then what is the mean of the distribution? Section B Question numbers 5 to 10 carry two marks each. 5. Find HCF of the number 31, 310 and 3100. 6. Find the least positive integer which on adding 1 is exactly divisible by 126 and 600. 7. Find the solution of the following pair of linear equations: 3 7 5 15 x y x y - = + = 8. In the figure,l m and OAC OBD ? ? ~ . If AC=5cm, OA=3cm and BD=2cm, find OB. 9. Solve the equation for? : 2 2 2 cos 3 cot cos ? ? ? = - Page 2 Summative Assessment-1 2014-2015 Mathematics Class â€“ X Time allowed: 3:00 hours Maximum Marks: 90 General Instructions: a) All questions are compulsory. b) Question paper contains 31 questions divide into 4 sections A, B, C and D. c) Question No. 1 to 4 are very short type questions, carrying 1 mark each. Question No. 5 to 10 are of short answer type questions, carrying 2 marks each. Question No. 11 to 20 carry 3 marks each. Question No. 21 to 31 carry 4 marks each. d) There are no overall choices in the question paper. e) Use of calculator is not permitted. Section A Question numbers 1 to 4 carry 1 mark each. 1. If ABC RPQ ? ? ~ , AB=3cm, BC=5cm, AC=6cm, RP=6cm and PQ=10cm, then find QR. 2. Express cos 48 tan88 ec ° + °in terms of t-ratios of angles between 0° and 45°. 3. In PQR ? , if 90 Q ? = ° and 3 sin 5 R = , then find the value of cos P. 4. In the frequency distribution, if 50 i f = ? and 2550 i i f x = ? , then what is the mean of the distribution? Section B Question numbers 5 to 10 carry two marks each. 5. Find HCF of the number 31, 310 and 3100. 6. Find the least positive integer which on adding 1 is exactly divisible by 126 and 600. 7. Find the solution of the following pair of linear equations: 3 7 5 15 x y x y - = + = 8. In the figure,l m and OAC OBD ? ? ~ . If AC=5cm, OA=3cm and BD=2cm, find OB. 9. Solve the equation for? : 2 2 2 cos 3 cot cos ? ? ? = - 10. Find the median of the data using an empirical formula, when it is given mode=35.3 and mean=30.5. Section C Question numbers 11 to 20 carry three marks each. 11. Write 32875 as product of prime factors. Is this factorization unique? 12. Divide the polynomial 3 2 4 6 10 3 x x x - - - by the polynomial 2 x x + and verify the division algorithm. 13. Find the zeroes of the quadratic polynomial 2 2 5 3 x x + - and verify the relationship between the zeros and the coefficients. 14. Solve using cross multiplication method. 4 4 3 2 14 u v u v - = + = 15. If in ABC ? , AD is median and AM BC ? , then prove that 2 2 2 1 4 AC AD BC DM BC = + × + 16. ABC is an isosceles triangle. If 90 B ? = ° , then prove that 2 2 2 AC BC = . 17. If cos(40 ) sin 30 x ° - = ° , find the value of x. 18. Prove the identify: (1 tan sec )(1 cot cos ) 2 ec ? ? ? ? + + + - = 19. The given distribution shows the number of runs scored by the batsmen in inter-school cricket matches: Runs scored 0-50 50-100 100-150 150-200 200-250 Number of batsmen 4 6 9 7 5 Draw a â€˜more than typeâ€™ ogive for the above data. 20. In a health check-up, the number of heart beats of 40 women were recorded in the following table: Number of heart beats/minute 65-69 70-74 75-79 79-84 Number of women 2 18 16 4 Find the mean of the data. Section D Question numbers 21 to 31 carry four marks each. 21. Express the HCF of number 72 and 124 as a linear combination of 72 and 124. 22. Ridhi decided to use public transport to cover a distance of 300km. she travels this distance partly by train and partly by the bus. She takes 4 hours if she travels 60 km by train and remaining by bus. If she travels 100 km by train and the remaining by bus, she takes 10 minutes more. Find the speed of train and bus separately. Why does Ridhi decide to opt for public transport? Page 3 Summative Assessment-1 2014-2015 Mathematics Class â€“ X Time allowed: 3:00 hours Maximum Marks: 90 General Instructions: a) All questions are compulsory. b) Question paper contains 31 questions divide into 4 sections A, B, C and D. c) Question No. 1 to 4 are very short type questions, carrying 1 mark each. Question No. 5 to 10 are of short answer type questions, carrying 2 marks each. Question No. 11 to 20 carry 3 marks each. Question No. 21 to 31 carry 4 marks each. d) There are no overall choices in the question paper. e) Use of calculator is not permitted. Section A Question numbers 1 to 4 carry 1 mark each. 1. If ABC RPQ ? ? ~ , AB=3cm, BC=5cm, AC=6cm, RP=6cm and PQ=10cm, then find QR. 2. Express cos 48 tan88 ec ° + °in terms of t-ratios of angles between 0° and 45°. 3. In PQR ? , if 90 Q ? = ° and 3 sin 5 R = , then find the value of cos P. 4. In the frequency distribution, if 50 i f = ? and 2550 i i f x = ? , then what is the mean of the distribution? Section B Question numbers 5 to 10 carry two marks each. 5. Find HCF of the number 31, 310 and 3100. 6. Find the least positive integer which on adding 1 is exactly divisible by 126 and 600. 7. Find the solution of the following pair of linear equations: 3 7 5 15 x y x y - = + = 8. In the figure,l m and OAC OBD ? ? ~ . If AC=5cm, OA=3cm and BD=2cm, find OB. 9. Solve the equation for? : 2 2 2 cos 3 cot cos ? ? ? = - 10. Find the median of the data using an empirical formula, when it is given mode=35.3 and mean=30.5. Section C Question numbers 11 to 20 carry three marks each. 11. Write 32875 as product of prime factors. Is this factorization unique? 12. Divide the polynomial 3 2 4 6 10 3 x x x - - - by the polynomial 2 x x + and verify the division algorithm. 13. Find the zeroes of the quadratic polynomial 2 2 5 3 x x + - and verify the relationship between the zeros and the coefficients. 14. Solve using cross multiplication method. 4 4 3 2 14 u v u v - = + = 15. If in ABC ? , AD is median and AM BC ? , then prove that 2 2 2 1 4 AC AD BC DM BC = + × + 16. ABC is an isosceles triangle. If 90 B ? = ° , then prove that 2 2 2 AC BC = . 17. If cos(40 ) sin 30 x ° - = ° , find the value of x. 18. Prove the identify: (1 tan sec )(1 cot cos ) 2 ec ? ? ? ? + + + - = 19. The given distribution shows the number of runs scored by the batsmen in inter-school cricket matches: Runs scored 0-50 50-100 100-150 150-200 200-250 Number of batsmen 4 6 9 7 5 Draw a â€˜more than typeâ€™ ogive for the above data. 20. In a health check-up, the number of heart beats of 40 women were recorded in the following table: Number of heart beats/minute 65-69 70-74 75-79 79-84 Number of women 2 18 16 4 Find the mean of the data. Section D Question numbers 21 to 31 carry four marks each. 21. Express the HCF of number 72 and 124 as a linear combination of 72 and 124. 22. Ridhi decided to use public transport to cover a distance of 300km. she travels this distance partly by train and partly by the bus. She takes 4 hours if she travels 60 km by train and remaining by bus. If she travels 100 km by train and the remaining by bus, she takes 10 minutes more. Find the speed of train and bus separately. Why does Ridhi decide to opt for public transport? 23. 5 years ago, age of one sister was twice the other sister. 5 years hence their ages will be in the ratio 2:3. Find their present ages. 24. Obtain all other zeroes of the polynomial 4 3 2 2 3 15 24 8 x x x x + - - - , if two of its zeroes are 2 2 and 2 2 - . 25. In the figure of ABC ? , P is the middle point of BC and Q is middle point of AP. If extended BQ meets AC in it, then prove that 1 3 RA CA = . 26. In a parallelogram ABCD, E is any point on side BC. Diagonal BD and AE intersect at P. Prove that DP EP PB PA × = × . 27. If (cos ) 0 A B + = and (cos ) 3 A B - = , find the value of a) sec .tan cot .sin A B A B - b) cos .cot sin .tan ecA B A B + 28. If tan A + sin A = m and tan A â€“ sin A = n, then prove that 2 2 ( ) 16 m n mn - = . 29. In the adjoining figure, ABCD is a rectangle with breadth BC=7cm and 30 CAB ? = ° . Find the length of side AB of the rectangle and length of diagonal AC. If the 60 CAB ? = ° , then what is the size of the side AB of the rectangle (use 3 1.73 = and 2 1.41 = , if required) 30. During an examination, percentage of marks scored by the students are recorded and are shown in the following table: Class 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 90-100 Number of students 1 3 2 8 20 15 13 25 18 10 Find the mode and median for the above data. 31. In a class, heights of students are recorded as follows: Height (in cm) Less than 142 Less than 146 Less than 150 Less than 154 Less than 158 Less than 162 Less than 166 Less than 170 Number of students 2 5 20 40 57 75 79 80 For above data, draw a â€˜less than typeâ€™ ogive and from the curve, find median. Also, verify median by actual calculations.Read More

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