Question

What is the value of x?
x= 2.25
x= 11.25
x= 13
x= 22

Answer 1

(D) x= 22

Explanation:

Answer 2

For this case we have that by definition, the sum of the internal angles of a triangle is 180 degrees.

Then, according to the figure we have:

`[180- (6x + 1)] + 79+ (2x + 10) = 180`

We operate parentheses:

`180-6x-1 + 79 + 2x + 10 = 180`

We add similar terms:

`-4x + 268 = 180\\-4x = 180-268\\-4x = -88\\x = \frac {-88} {- 4}\\x = 22`

Thus, x has a value of 22 degrees.

Answer:

Option D