Question

A triangle has angles that measure 43°, 7 minus 3x.° and 6x.°. Which equation can be used to find the value of x?

Answer 1

Answer:

The value of $x$ is 15.222. We need to use the following equation: $9\cdot x = 137^{\circ}$

Step-by-step explanation:

From Euclidean Geometry, we know that the sum of measures of internal angles in a triangle equals 180º. Then, we can find the value of $x$ by this formula:

$43^{\circ}+3\cdot x + 6\cdot x = 180^{\circ}$ (1)

$9\cdot x = 137^{\circ}$

$x = 15.222$

The value of $x$ is 15.222.