Answer: 10
Step-by-step explanation: 15*2=30,
then you take 50 and subtract 30 from it that leaves you with 20
You then take that 20 and divide it by 2 (because there are two sides that have the width) you get 10
The answer is -.2.5 hope that help
x = -2.5 is a vertical line. The vertical graph of the equation is shown in the image attached below.
<h3>What is the Equation of a Vertical Line?</h3>
The slope of a vertical line is undefined, therefore, the equation of a vertical line is expressed as x = a, where a is the x-intercept.
Given x = -2.5, the equation suggests it is a vertical line, where the line intercepts the x-axis at -2.5, which is the x-intercepts.
Thus, the graph for x = 2.5 is shown in the diagram below.
Learn more about the equation of a vertical line on:
brainly.com/question/9050446
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There you go :) hope this helps!