Which of the following has a constant of proportionality of 2? A) y = 2x B) y = x + 2 C) 2y = x D) y + 2 = 2x

Mathematics

2 answers:

NNADVOKAT [17]3 years ago

8 0

Answer: The answer is A. y=2x

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Setler [38]3 years ago

5 0

The correct answer is A.

You have direct variation if x and y are modeled by the equation

$y = mx$

In this case, m is the constant of proportionality. So, if the constant has to be 2, the equation becomes

$y = 2x$

A side note: Actually, option C has a constant of proportionality of two as well, except the roles of x and y are interchanged. I chose option A because usually you want the y = mx form, but the names of the variables are obviously meaningless.

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An average soccer player travels 7 miles during a game. A typical field is 104 meters long. How many times did the average socce

marissa [1.9K]

Answer:

About 108 times

Step-by-step explanation:

Given:

An average soccer player travels 7 miles during a game

A typical field is 104 meters long.

To find:

How many times did the average soccer play travel the length of the field?

Solution:

An average soccer player travels during the game = 7 miles

First convert 7 miles into meters, 1 mile = 1609.34 meter

7 mile = 1609.34 \times 7 = 11265.41 m

Length of field = 104 meters

To find number of times average soccer player travel the length of the field, we will divide an average soccer player travels during the game by Length of field

11265.41 m $\div$ 104 = 108.32