The measures of two supplementary angles are described by the expressions (9y−5)° and (19y−11)°. Find the measures of the angles.............. I know that the Supplementary angles = 180 degreesand the sum of these two angles will equal 180 I'm guessing I'm finding y for both to get the answer but I'm lost

Respuesta :

ANSWER:

58° and 122°

STEP-BY-STEP EXPLANATION:

The sum of both angles is equal to 180°, therefore, we can establish the following equation:

[tex]9y-5+19y-11=180[/tex]

We solve for y, just like this:

[tex]\begin{gathered} 28y=180+5+11 \\ y=\frac{196}{28} \\ y=7 \end{gathered}[/tex]

Therefore, we calculate the value of each angle, knowing the value of y:

[tex]\begin{gathered} \alpha=9\cdot7-5=58\text{\degree} \\ \beta=19\cdot7-11=122\text{\degree} \end{gathered}[/tex]

Therefore, the angles measure 58° and 122°