Exercise 7.1 Q1. In quadrilateral ACBD, AC = AD and AB bisects ∠ A. Show that ∆ ABC ≅ ∆ […]

Exercise 6.1 Q1. In Fig. 6.13, lines AB and CD intersect at O. If ∠AOC +∠BOE = 70° and ∠BOD

Q1: Which of the following statements are true and which are false? Give reasons for your answers.(i) Only one line

Exercise 4.1 Q1. The cost of a notebook is twice the cost of a pen. Write a linear equation in

Exercise 3.1 Q1. How will you describe the position of a table lamp on your study table to another person?Ans:

Q1: Use suitable identities to find the following products: (i) (x + 4)(x + 10) Ans: Using the identity (x + a)(x

Q1. Determine which of the following polynomials has (x + 1) a factor:(i) x3 + x2 + x + 1Ans: Let p(x) =

Q1. Find the value of the polynomial 5x – 4×2 + 3 at (i) x = 0 (ii) x = –1 (iii) x =

Q1. Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.(i)

Exercise 1.3 Q1. Write the following in decimal form and mention the kind of decimal expansion each has. (i) 36/100Ans:= 0.36