168cm2
Let r cm be the radius of the balloon, then
<span>2pi(r)=23=>r=23/(2pi) </span>
<span>The surface area= </span>
<span>4pi(r^2)= </span>
<span>4pi[23/2pi)]^2= </span>
<span>(23^2)/pi=168.386 cm^2 </span>
<span>approximately.</span>
Step-by-step explanation:
a function that describes a set of points in Cartesian space by mapping each x-coordinate to a y-coordinate, then a circle cannot be described by a function because it fails what is known in High School as the vertical line test. A function, by definition, has a unique output for every input.
We can combine x + x and get 2x. So we have:
8x - 2y + 2x. Therefore 10x - 2y is equivalent.
Answer: 
Step-by-step explanation:
Given the following Quadratic equation:
You can change its formed by Completing the square.
In order to do Complete the square, you can follow these steps:
1. You can identify that:
2. Then, you can find 
. This is:
3. Now you must add 
to both sides of the Quadratic equation in order to keep the balance. Then:
4. Finally, simplifying by actoring and adding the like terms, you get:
46.
3x + y = 2x +y
X+y=y
X= 0
3x + y + 2x +y = 4x+10
2y+x= 10
Y=5
