Question

the angle of a triangle are (x-40)"(x - 20) and (1/2x-10)" Find the value of x​

Answer 1

Answer:

x=100

Step-by-step explanation:

given angles,

(x-40),(x-20),(1/2x-1)

sum of three angles in a triangle is 180degree

now,

x-40+x-20+(1/2x-10) =180

2x + 1/2x = 180+70

5x/2 = 250

5x= 500

x=100

Answer 2

Answer:

• The value of x is 100.

Step-by-step explanation:

Given that:

The angles of triangle:

• First angle = (x - 40)°
• Second angle = (x - 20)°
• Third angle = (½x - 10)°

To Find:

• The value of x.

We know that:

• Sum of angles of a triangle is equal to 180°.

Finding the value of x:

According to the question,

⟶ (x - 40) + (x - 20) + (½x - 10) = 180

⟶ x - 40 + x - 20 + ½x - 10 = 180

⟶ x + x + ½x - 40 - 20 - 10 = 180

⟶ 2½x - 70 = 180

⟶ 2½x = 180 + 70

⟶ 2½x = 250

⟶ (5/2)x = 250

⟶ x = (250 × 2)/5

⟶ x = 500/5

⟶ x = 100

∴ The value of x = 100

Answer: The value of x is 100.

Hope it helps you!!(●'◡'●)