NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Exercise 5.1 Page 99 1. In which of the following situations, does the list of numbers involved make an arithmetic progression and why? (i) The taxi fare after each km when the fare is ₹ 15 for the first km and ₹ 8 for each additional km. Answer (i) Let tn be the taxi fare for first n … [Read more...] about Exercise 5.1
Class 10
Exercise 4.4
NCERT Solutions for Class 10 Maths Chapter 4 Quadratic Equations Exercise 4.4 Page 91 1. Find the nature of the roots of the following quadratic equations. If the real roots exist, find them; (i) 2x2 – 3x + 5 = 0 Answer 2x2 – 3x + 5 = 0 Comparing the equation with ax2 + bx + c = 0, we get a = 2, b = -3 and c = 5 We know, Discriminant = b2 – 4ac = ( – 3)2 – 4 (2) … [Read more...] about Exercise 4.4
Exercise 4.3
NCERT Solutions for Class 10 Maths Chapter 4 Quadratic Equations Exercise 4.3 Page 87 1. Find the roots of the following quadratic equations, if they exist, by the method of completing the square: (i) 2x2 – 7x + 3 = 0 ⇒ 2x2 – 7x = – 3 Dividing by 2 on both sides, we get ⇒ x2 -7x/2 = -3/2 ⇒ x2 -2 × x × 7/4 = -3/2 On adding (7/4)2 to both sides of equation, we get ⇒ … [Read more...] about Exercise 4.3
Class 10 English Chapter 9 | Bholi
Bholi | Question and Answer | NCERT | Class 10 | English | Footprints without Feet Read and Find out Question 1 Why is Bholi’s father worried about her? Answer Bholi was not like other children. She was just 10 months old when she suffered a brain injury due to which she always remained backward child and came to known as Bholi. At the age of two she suffered … [Read more...] about Class 10 English Chapter 9 | Bholi
Exercise 4.2
NCERT Solutions for Class 10 Maths Chapter 4 Quadratic Equations Exercise 4.2 Page 76 1. Find the roots of the following quadratic equations by factorisation: (i) x2 – 3x – 10 = 0 Answer Given, x2 – 3x – 10 =0 Taking LHS, ⇒ x2 – 5x + 2x – 10 ⇒ x(x – 5) + 2(x – 5) ⇒ (x – 5)(x + 2) The roots of this equation, x2 – 3x – 10 = 0 are the values of x for which (x – … [Read more...] about Exercise 4.2