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Question 14: Let the two required angles be x o and 90 o — x o. Two chords AB and CD of a circle intersect each other at P outside the circle. You can download the RS Aggarwal Class 9 Maths Solutions with Free PDF download option, which contains chapter wise solutions.
Then, With O as centre and OB as radius, drawn an arc, meeting OX at P. The mean of 20 numbers is 18. Join BD and AC, Hope given are helpful to complete your math homework. Thus we get the required histogram. By what per zip should the new salary be decreased to restore the original salary. The diagonals of a cyclic quadrilateral are at right angles. Sonal attended her school on 204 days in a full year.
The mean of 20 numbers is 18. So sum of consecutive interior angles is 180 o. Since the scale on X-axis starts at 130, a kink break is indicated near the origin to show that the graph is drawn to scale beginning at 130.
RS Aggarwal Class 9 Solutions - Question 3: Give frequency distribution is as below : Height in cm 130-136 136-142 142-148 148-154 154-160 160-166 No.
Find the arithmetic mean of i The first eight natural numbers. The number of children in 10 families of a locality are 2, 4, 3, 4, 2, 0, 3, 5, 1, 6. Find the mean number of children per family. The following are the number of books issued in a school library during a week : 105, 216, 322, 167, 273, 405 and 346. Find the average number of books issued per day. The daily minimum temperature recorded in degree F at a place during a week was as under: Find the mean temperature. The percentages of marks obtained by 12 students of a class in Mathematics are 64, 36, 47 ,23, 0, 19, 81, 93, 72, 35, 3, 1. Find the mean percentage of marks. The mean of 24 numbers is 35. If 3 is added to each number, what will be the new mean? The mean of 20 numbers is 43. If 6 is subtracted from each of the numbers, what will the new mean? Solution: Let x1 + x2 + x3…….. The mean of 15 numbers is 27. If each number is multiplied by 4, what will be the mean of the new numbers. The mean of 12 numbers is 40. If each number is divided by 8, what will be the mean of new numbers. The mean of 20 numbers is 18. If 3 is added to each of the first ten numbers, find the mean of the new set of 20 numbers. Solution: Let x1, x2, x3,….. The mean weight of 6 boys in a group is 48 kg. The individual weights of five of them are 51 kg, 45 kg, 49 kg, 46 kg and 44 kg. Find the weight of sixth boy. The mean of the marks scored by 50 students was found to be 39. Later on it was discovered that a score of 43 was misread as 23. Find the correct mean. The mean of 100 items was found to be 64. Later on it was discover that two items were misread as 26 and 9 instead of 36 and 90 respectively. Find the correct mean. The mean of six numbers is 23. If one of the numbers is excluded, the mean of the remaining numbers is 20. Hope given are helpful to complete your math homework. If you have any doubts, please comment below.