When a = 6 and b = 22, c = 33. if c varies directly with b and inversely with a, which equation models the situation?

c = 9b/c

Step-by-step explanation:

If c varies directly with b and inversely with a, then this may be written mathematically as;

c = kb/a

Therefore;

k = ac/b

Hence in this case;

k = (6 × 33)/22

   = k

Therefore; the equation connecting the variables is;

c = 9b/a

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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