# Tag Archives: RD Sharma Class-9

Question 11. In figure, AB = AC and CP ∥ BA and AP is the bisector of exterior ∠CAD of ∆ABC. Prove that (i) ∠PAC… Read More
Question 1: In ΔABC, if ∠A = 40° and ∠B = 60°. Determine the longest and shortest sides of the triangle. Solution: Given that in… Read More
Factorize each of the following: Question 1. a3 + 8b3 + 64c3 – 24abc Solution:  We know that a3 + b3 + c3 – 3abc… Read More
Question 1. In the below fig, lines l1, and l2 intersect at O, forming angles as shown in the figure. If x = 45°. Find… Read More
Question 1. In a parallelogram ABCD, determine the sum of angles C and D. Solution: In the given ||gm ABCD, ∠C + ∠D = 180°… Read More
Question 11. Read the following bar graph and answer the following questions: (i) What information is given by the bar graph?(ii) What was the production of… Read More
Question 1. Two opposite angles of a parallelogram are (3x – 2)° and (50 – x)°. Find the measure of each angle of the parallelogram.… Read More
Question 1. Find the median of the following data: 83, 37, 70, 29, 45, 63, 41, 70, 34, 54 Solution: Ascending order sequence of the… Read More
Question 1. The following table shows the daily production of T.V. sets in an industry for 7 days of a week. Day Monday Tuesday Wednesday… Read More
Question 1. ABC is a triangle and D is the mid-point of BC. The perpendiculars from D to AB and AC are equal. Prove that… Read More
Question 1. In two right triangles, one side an acute angle of one are equal to the corresponding side and angle of the other. Prove… Read More
Question 11. The following data gives the amount of manure (in a thousand tonnes) manufactured by a company during some years: Year 1992 1993 1994 1995… Read More
Question 1. Explain the reading and interpretation of bar graphs. Solution:  A bar graph comprises a sequence of vertical or horizontal bar lines, also known… Read More
Question 1. Define cumulative frequency distribution. Solution: The structure showing the distribution of cumulative frequencies over various classes is known as cumulative frequency distribution. Question 2.… Read More
Question 1. Calculate the mean for the following distribution: x: 5 6 7 8 9 f: 4 8 11 14 3 Solution: x f fx… Read More