Express into the fractions with common denominator (11-20): a a у а 11. 11 12.*, 13. 2x By 3m 2n 14. b a - b'a+b bc ac pq pr 15. a x ya a-2ab' a + 2b 3 2 16. a? - 4' a(a + 2) 17. b a² - 9²a+3 a b с 18. a b 19. с a+b a-b' a-c a - b' a+b' a(a + b) 3 20. 2 x -x-2' x + x-6​

asdfghkl

step-by-step explanation:

asdfghkl

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

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