A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
What is the value of x?
Solution:
Inside a triangle, the angles add upto 180°
From the figure, the third angle is supplementary to (6x + 1)°
Two angles are said to be supplementary angles if they add up to 180 degrees.
Angle 1 = 79°
Angle 2 = (2x + 10)°
Angle 3 = 180° - (6x + 1)°
It can be written as
79° + (2x + 10)° + 180° - (6x + 1)° = 180°
By further calculation
79 + 2x + 10 + 180 - 6x - 1 = 180
268 - 4x = 180
So we get
4x = 268 - 180
4x = 88
Divide both sides by 4
x = 22
Therefore, the value of x is 22.
What is the value of x?
Summary:
The value of x is 22.
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