Class 9 गणित | निर्देशांक ज्यामिति | Coordinate Geometry | सबसे महत्वपूर्ण सवाल | Ch- 3 | Kamal Sir

Basics Of Coordinate Geometry (निर्देशांक ज्यामिति)

What We Learn Today (आज हम क्या पढ़ेंगे)|Basics Of Coordinate Geometry (निर्देशांक ज्यामिति)|Direction Ratios (दिशा अनुपात)|Direction Cosine (दिक्-कोज्या)|Concept Of Line (रेखा की अवधारणा)|Angle Between Two Lines (दो रेखाओ के बीच का कोण) |Questions (प्रश्न)|OMR

Level-3 11. On Vanmahotsva day, students of class IX were asked to get saplings & develop nursery in the triangular region allotted to them as in the figure given below: A 2 3 4 5 6 7 8 9 10 (i) Find the coordinates of the vertices P, Q, R (ii) Find the area in which the nursery has been developed

CH. 14 STATISTICS Q1 Class 0-8 8-16 16-24 24-32 32-40 Frequency 10 12 26 9 15 e mean of above data by: () Direct method () Assumed mean method (ii) Step deviati iop metod. Q2 The following distribution shows the daily pocket allowance of children of a locali ty. The mean pocket allowance is Rs 20. Find the missing frequency Daily Pocket 0-20 20-40 40-60 0-80 80-100 No. Of Children 7 10 9 13 Q3. The following table shows age distribution of persons in a particular region. Find the: (0) mean age (i)modal age (ili) median age Age? Below!0 Below20 Below30 Below 40, Below 50 Belo No, persons ? 250 190 100 40 15 4 Arithmetic mean of the following frequency distribution is 50. Find the missing frequencies C.I. ? 0-20 20-40 40-60 60-80 80-100 Tota