1. move 78.2 over to the over side. This will give you 287-78.2.
2. when you have .5x = 208.8, divide both sides by .5
3. this should give you x= 417.6
4. make sure to check your work by plugging you answer back into x.
 
        
                    
             
        
        
        
Answer:
2.30/7.5
Step-by-step explanation:
4.30-2=2:30
2.5-10=7.5
 
        
             
        
        
        
X(4*1) because I’m just doing what I’m told.
        
             
        
        
        
This is going to help you understand
ttps://www.mathsisfun.com/algebra/degree-expression.html
        
             
        
        
        
Pi( ) is the ratio of circumference to diameter for any circle.
) is the ratio of circumference to diameter for any circle.
Perimeter is the distance around a circle.
Circumference of circle  .
.
Perimeter of circle 
What is circle ?
A circle is a spherical shape without boundaries or edges.
A circle is a closed, curved object with two dimensions in geometry.
Consider two small arcs AB and CD of two circles of radii x and y units, both of which make an angle of measure θ at the centers P and Q respectively.
For smaller values of θ, the arc length AB is almost equal to the length of the line segment  . Similarly, arc CD ≅
. Similarly, arc CD ≅  .
.
Using the SAS rule of triangle similarity, we can say that APB and CQD are similar triangles because their angles are the same and their ratios are AP: PB = CQ: QD = 1: 1. So, it stands to reason that AB: AP = CD: CQ.
Circumference =  diameter or circumference = 2
 diameter or circumference = 2 radius if this constant equals some value.
 radius if this constant equals some value. 
So it was proved.
Learn more about Circle click on this:
brainly.com/question/24375372
#SPJ13