Chuanxi planned a rectangular sidewalk with a length of 21 ft. He made a scale drawing using a scale factor of 1 in. = 7 ft. He

Question

3 years ago

10

Chuanxi planned a rectangular sidewalk with a length of 21 ft. He made a scale drawing using a scale factor of 1 in. = 7 ft. He

decided to change the length of the actual sidewalk to 27 ft. If the scale drawing still has a length of 3 in., what does 1 in. represent in the new scale?

Mathematics

2 answers:

Masteriza [31] · Answer 1 · 2021-11-09T18:30:05+03:00

Masteriza [31]3 years ago

7 0

Original Ratio of 1 in = 7 ft so 3 in = 21 ft
Now, New ratio 1 in = x ft so 3 in = 27ft

1/x = 3/27

cross multiply a/b = c/d ad = bc
1/x = 3/27
3x = 27
x = 9

1 in represents 9 ft

Katyanochek1 [597] · Answer 2 · 2021-11-09T20:54:15+03:00

Katyanochek1 [597]3 years ago

5 0

Answer:

D which is 9

Step-by-step explanation:

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