Respuesta :
ok so since the ratio is 7:5 that means you have an 8'' sandwich with 12 (7+5) separate units. imagine drawing the sandwich and dividing it into 12 sections.
so 8/12= .6666666 (thats the length of 1 unit)
now take .6666666 x 7 units = 4.6666666 inches '' (thats the bigger half)now take .6666666 x 5 units = 3.333333333 inches (thats the shorter half)
you'll notice that 4.66666666'' + 3.3333333" = 8''
so 8/12= .6666666 (thats the length of 1 unit)
now take .6666666 x 7 units = 4.6666666 inches '' (thats the bigger half)now take .6666666 x 5 units = 3.333333333 inches (thats the shorter half)
you'll notice that 4.66666666'' + 3.3333333" = 8''
The length of the shorter piece of the submarine sandwich is 4.66 inches.
Ratio
A ratio expresses the number of times one number appears in another.
How to find the length of the shorter piece?
Given submarine sandwich length is 8-inch long.
It is divided into two pieces, each with a length ratio of 7:5.
Let the longer piece length is x and the shorter piece length be y then,
[tex]\dfrac{x}{y} =\dfrac{7}{5}\\y=\dfrac{5x}{7}...(1)[/tex]
The total length of the submarine sandwich is 8-inch long then,
x+y =8
From equation (1)-
[tex]\dfrac{5x}{7} +x=8\\5x + 7x = 56\\12y =56y = 4.66[/tex]
Hence, the length of the shorter piece is 4.66 inches.
Learn more about ratio here- https://brainly.com/question/13419413
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