Hurry

which description is paired with its correct expression?

seven less than the quotient of two and a number squared, increased by six; 7-2/n^2+6

nine times the difference of a number cubed and three: 9(n^3-3)

eight more than the quotient of a number squared and four, decreased by seven; 8+4/n^2-7

twice the difference of a number cubed and eight; 2n^3-8

answer:

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

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