The real distance between the two cities is 100000 feet.
<h3>How to use scales to estimate real life distances</h3>
Scales are applications of ratios in which maps are mostly based and that are used to estimate real distances between two points. Scales (r) are represented by the following formula:
r = m' / m (1)
Where:
- m - Real length
- m' - Reduced length
If we know that m' = 400 in and r = 4 in / 1000 ft, then the real distance between the two cities is:
m = m' / r
m = (400 in) / (4 in / 1000 ft)
m = 100000 ft
The real distance between the two cities is 100000 feet.
To learn more on ratios: brainly.com/question/1504221
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See the explanation
<h2>
Explanation:</h2>
Here we have the following points:
<h3>3) </h3>
Here we need to reflect each point over the x-axis and write the coordinates of the new points. So:
<h3>4)</h3>
The x coordinate of each point remains the same while the y coordinate of each point is multiplied by -1. In other words, when reflecting any point over the x-axis we follow this rule:
<h3>5)</h3>
The difference is that the pre-image and the reflected point will have the same x-coordinates but different y-coordinates. So the x-axis will work as a mirror.
<h2>Learn more:</h2>
Other transformations: brainly.com/question/12534603
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Square both sides of the inequality.
x > 16
E, F are numbers greater than 16.
121.38 should be the right answer