Answer:
The circumference of the circle is 52π
Step-by-step explanation:
To solve this exercise we first have to calculate the radius of the circle, for this we will use the formula of area of a circle and we will clear the radius
a = area = 676π
r = radius
a = π * r²
we clear r
r = √(a/π)
now we replace the known values
r =  √(676π/π)
r = √(676)
r = 26
now we use the formula to calculate the circumference of a circle
c = π * 2r
c = π * 2 *  26
c = 52π
The circumference of the circle is 52π
 
        
                    
             
        
        
        
Answer:
29
Step-by-step explanation:
For the two digit numbers it has to end in a zero or five and be greater than 9 and below 100. 
There are 18 multiples of 5 that are 2 digit 
For multiples of 7... it's easier to write it out because the total number will will less than 20. 
There are 13 multiples of 7 that are 2 digits 
Now you have to subtract the multiples of 7 that end in a 0 or 5 
That give you 11 multiples 
Add 11 and 18 to get 29 
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
now the equation looks like
3-4Cos(x)=y
hmmm i'm wondering if you can figure it out from here???  it's the same as the other two.. plug in that  /2  .. can you?   :)
 /2  .. can you?   :)
 
        
             
        
        
        
Answer:
38.3
Step-by-step explanation:
hope I helped
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
we know that
Karl makes 7 1/2 batches of cookies using 1 1/2 dozen eggs
so using proportion
Find out how many batches of cookies could he make with a dozen eggs
step 1
Convert mixed numbers to an improper fraction


step 2 
Applying proportion
Let
x ----> the amount of batches of cookies
