Volume = π×22<span>×6 = </span><span>75.398223686155 feet^3</span>
        
             
        
        
        
Answer:
x = 4
y = 1
Step-by-step explanation:
Here, we want to solve the system of equation using elimination method
We have this as follows;
3x + y = 13
4x- 3y = 13 
Multiply equation 1 by 3
9x + 3y = 39
4x-3y = 13
Add the two equations 
13x = 52
x = 52/13
x = 4
From equation 1;
3x + y = 13
y = 13-3x
y = 13-3(4)
y = 13-12 = 1 
 
        
             
        
        
        
4 cm x 4 cm would make a 16 cm area
just multiply 4 and 4 together to get the answer!
16 cm area
please mark the brainliest!
        
             
        
        
        
First off, let's convert the percentages to decimal format, so our 77% turns to 77/100 or 0.77, and our 55% turns to 55/100 or 0.55 and so on
now, the sum of both salines, must add up to the 77% mixture, let's say is "y"
so, 11 + 4 = y, and whatever the concentration level is, must also sum up to the mixture's concentration of 77%
anyway   thus

solve for "x"