Answer:
b
Step-by-step explanation:
 
        
                    
             
        
        
        
Alright, so what we can take as a given is that arcDE/2= ∠CDE=2x+20 since the arc corresponding to the angle is 2*the angle. To solve for arcDE, we multiply both sides by 2 to get 2(2x+20)=4x+40=arcDE. Since the arcs in a circle add up to 360 degrees and we only have -20+30x and arcDE, we have -20+40+4x+30x=360 using the associative property. Simplifying, we get 20+34x=340. Subtracting 20 from both sides, we get 340=34x. Next, we can divide both sides by 34 to get 10=x. 
        
             
        
        
        
It is 0.45; 0.5; 5/8; 0.75. Hope it helps!
        
                    
             
        
        
        
Ship fast equation for n packages:
2n+(1)x
where x the weight of the packages
Speedy delivery equation for the number of packages:
3n+(0.50)x
The same price happened when:
2n+(1)x = 3n+(0.50)x
x - 0.5x=3n - 2n
x = n/0.5
x = 2n
when the package weight is 2 pounds
        
             
        
        
        
Using a system of equations, it is found that Susan had 44 quarters, 11 dimes and 27 nickels.
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We are going to use:
- x as the number of quarters.
- y as the number of dimes.
- z as the number of nickels.
A <em>quarter </em>is worth $0.25. A <em>dime </em>is worth $0.1, and a <em>nickel </em>is worth $0.05. Total of $13.45, then:

4 times as many <u>quarters as dimes</u>, thus:

16 less <u>dimes than nickels</u>, thus:

Replacing in the first equation, we find x:





Now, with x, we find y and z:


Susan had 44 quarters, 11 dimes and 27 nickels.
A similar problem is given at brainly.com/question/24342899