Question

find the value of X explanation plz both c and f​

Answer 1

Answer:

c

Step-by-step explanation:

c) 75°+x°+70°=180° (sum of all angle on straight line)

x°+145°=180°

x=180°-145°

x=35°

f) x+(x+10)°+(2x+10) =180°

(sum of all angle on a straight line)

4x+20°=180°

4x=160°

x=40°

Answer 2

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C)

Answer :-

• Value of x is 35°.

Given :-

• Three angles as 75°, x° and 70°

To Find :-

• Value of x

SoluTion :-

Here,

• 1st angle is 75°
• 2nd angle is x°
• 3rd angle is 70°

We know that the sum of the angles formed on a linear pair is 180°.

According to question :-

75° + 70° + x = 180°

→ 145° + x = 180°

→ x = 180° - 145°

→ x = 35°

Hence, the value of x is 35°.

F)

Answer :-

• Value of x is 40°.

Given :-

• Three angles as x°, (x + 10)° and (2x + 10)°.

To Find :-

• Value of x

SoluTion :-

Here,

• 1st angle is x°
• 2nd angle is (x + 10)°
• 3rd angle is (2x + 10)°

We know that the sum of angles formed on a linear pair is 180°.

According to question :-

x + (x + 10)° + (2x + 10)° = 180°

→ x + x + 10 + 2x + 10 = 180°

→ x + x + 2x + 10 + 10 = 180°

→ 4x + 20 = 180°

→ 4x = 180° - 20

→ 4x = 160

→ x = 160/4

→ x = 40°

Now,

Angles are

• x° = 40°
• (x + 10)° = (40 + 10)° = 50°
• (2x + 10)° = {2(40) + 10} = 90°

Hence, the value of x is 40°.

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