Question

3. Set up the equations in the following cases :
(i) Mohit's mother is 38 years old. She is 5 years older than four times Mohits
(Take Mohit's age to be x years)
(ii) In an isoscles triangle, the vertical angle is thrice of either base angle.
(Let the base angle be a in degrees).
(iii) If the length of a rectangle exceeds its breadth by 10 metres. Its perimeter is 40,
(Let the breadth of rectangle be 'd' metres).​

Answer 1

Answer:

(i) 4x + 5 = 38

(ii) v = 3a

(iii) 40 = 2[ (d+10) + d

Step-by-step explanation:

(i) x is mohit's age

(ii) v is vertical angle, a is base angle

(iii) 40 is perimeter, d+10 is length, d is breadth, and perimeter of a rectangle is:

2 * (length + breadth)

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Answer 2

Answer:

Step-by-step explanation:

1) 38=5+4a. 2). 5a= 180. 3) 40=2(2a+10)