Marcel is purchase a boad to build a bookcase he wants to divide the board into 1.75-foot sections he needs 6 sections what size board dose marcel need.

10.5 feet

Step-by-step explanation:

From the question, we are informed that Marcel is purchasing a board to build a bookcase he wants to divide the board into 1.75-foot sections and that he needs 6 sections.

The size of the board that Marcel need will be calculated by multiplying 6 by 1.75 foot. This will be:

= 6 × 1.75

= 10.5 feet

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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