RS = 3x + 17, MN = 7x - 15

Step-by-step explanation:

RS ≡ MN

 3x + 17 = 7x - 15

- 3x          - 3x

         17 = 4x - 15

      + 15        + 15

         32 = 4x

          4      4

           8 = w

step-by-step explanation:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest