a) The <em>perimeter</em> function of the rectangle is 
.
b) The domain of the <em>perimeter </em>function is ![x \in [-3, 3]](https://tex.z-dn.net/?f=x%20%5Cin%20%5B-3%2C%203%5D)
.
<h3>
How to analysis the perimeter formula of a rectangle inside a parabola</h3>
a) The perimeter of a rectangle (
) is the sum of the lengths of its four sides:
(1)
If we know that 
and 
, then the perimeter of the rectangle is represented by the following formula:
The <em>perimeter</em> function of the rectangle is . 
b) The domain of the function is the set of values of 
associated to the function. After a quick inspection, we find that the domain of the <em>perimeter </em>function is .
<h3>Remark</h3>
The statement is incomplete and poorly formatted. The correct form is described below:
<em>As shown at the right, rectangle ABCD has vertices C and D on the x-axis and vertices A and B on the part of the parabola </em>
<em> that is above the x-axis. a) Express the perimeter </em><em> of the rectangle as a function of the x-coordinate of A. b) What is the domain of the perimeter function?</em>
To learn more on rectangles, we kindly invite to check this verified question: brainly.com/question/10046743
Answer:
number 5 is 15x
Step-by-step explanation:
what you have to do is just add basically. The ones with exponents you do the usual with those as well. Ignore the X's and when you solve the problem add the x beside the number.
Answer: do your work yourself
Step-by-step explanation:
Answer:
127 + x = y
Step-by-step explanation:
127 = the amount he already has
x = the amount he needs still
y= the total amount for the guitar
Step-by-step explanation:
5x +8/5x-1=4/9
Cross mutiply
9(5x +8)=4(5x -1)
=45x +72=20x-4
Collect like terms
45x-20x = -4-72
25x= -76
x= -76/25
