A scale model of a boxcar of a train has a length of 10 inches and a width of 2 inches. The length of the real boxcar is 55 feet
. What is the width of the real boxcar?
2 answers:
Answer: 11 feet.
Step-by-step explanation:
Given: A scale model of a boxcar of a train has a length of 10 inches and a width of 2 inches.
The length of the real boxcar = 55 feet.
Let x be the width of the real car.
We know that the corresponding dimension of two similar models are proportional, therefore we have
Hence, the width of the real boxcar is 11 feet.
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Answer:
The relationship between the circumference of a circle and its diameter represent a direct variation and the constant of proportionality is equal to the constant
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
where K is the constant of proportionality
In this problem we know that
The circumference of a circle is equal to
therefore
the relationship between the circumference of a circle and its diameter is a direct variation and the constant of proportionality is equal to the constant