Of 48 ​cities, 7 have a lake and 25 have a river running through them. What fraction of these 48 cities have a lake or a river running through​ them? Show your work. Which expression can be used to find the fraction of cities that have a lake or a river running through​ them? Select the correct choice and fill in the answer box to complete your choice. ​(Type a whole number or a​ fraction.)

b

step-by-step explanation:

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints

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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