SOLUTION: 1 and 2 are supplementary angles. m 41 is 4y +7, and m 42 is 9y + 4. Find m2

Algebra ->  Angles -> SOLUTION: 1 and 2 are supplementary angles. m 41 is 4y +7, and m 42 is 9y + 4. Find m2      Log On


   

Question 1095945: 1 and 2 are supplementary angles. m 41 is 4y +7, and m 42 is 9y + 4. Find m2
Found 2 solutions by CubeyThePenguin, ikleyn:
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
m1 + m2 = 90

(4y + 7) + (9y + 4) = 90

13y + 11 = 90

13y = 79

y = 79%2F13

Answer by ikleyn(52802) About Me  (Show Source):
You can put this solution on YOUR website!
.
1 and 2 are supplementary angles. m 41 is 4y +7, and m 42 is 9y + 4. Find m2
~~~~~~~~~~~~~


            The solution by the other tutor is absolutely wrong.

            I came to bring the correct solution. 


    (4y+7) + (9y+4) = 180    (not 90 degrees: the angles are SUPPLEMENTARY - not complementary).


    13y             = 180 - 7 - 4

    13y             = 169

      y             = 169/13 = 13  degrees.


The angle 2 measure is  9y + 4 = 9*13+4 =  121 degrees.    ANSWER

Solved.

---------------

To learn about supplementary angles,  read the lessons
    - Angles basics
    - HOW TO solve problems on supplementary, complementary or vertical angles - Examples
in this site.


Consider these lessons as your handbook,  textbook,  guide,  tutorials and  (free of charge)  home teacher.