In mathematics, we often discuss modeling. In geometry, we model the physical world with different shapes. In algebra, we model situations of change and variability with functions. Where else have you heard the term model? How is that meaning of the word different from or the same as the meaning we use in algebra?

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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1/3 + 1/5 = 8/15.

step-by-step explanation:

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