Question

please answer this question fast and correctly
class 9​

Answer 1

Answer:

50

Step-by-step explanation:

(x+10) + x + (x+20) =180 (since they are ina straight line)

3x+30 =180

3x=150

x=50

Answer 2

Step-by-step explanation:

In this question, what we need to apply is the concept of straight angles in a straight line.

We know that wherever we're given a straight line, divided into infinite segments, they always sum up to give us 180°.

In this question also, we're gonna apply the same thing so there!

$\rm{x + 10 + x + x + 20 = 180}$

Simplifying the terms given,

$\rm{3x + 30 = 180}$

$\rm{3x = 180 - 30}$

$\rm{3x = 150}$

$\rm{x = \dfrac{150}{3}}$

$\rm{x = 50}$

So, we found x as 50°. Hence the required answer to the question.

• Note :- We need to apply the concept of angles in a straight line or linear pair.