Answer:
50.24 units^2
Step-by-step explanation:
Area of circle formula:  r^2
r^2
r = 4,  = 3.14
 = 3.14
3.14 * (4^2) = 3.14 * 16 = 50.24
 
        
                    
             
        
        
        
Let's bear in mind that 5 gallons with a solution of 6% bleach, contains some water plus some bleach, how much bleach?  well, is just 6% of 5 gallons or namely (6/100) * 5 gallons, or 0.30 gallons.
if we use "x" gallons of water, well pure water has no bleach, so is 0% bleach, and it has a (0/100) * x or 0x gallons of bleach.
the mixture will be say "y" gallons, and is 4% bleach, so (4/100) * y is 0.04y gallons in the mixture of bleach.
 
 
        
        
        
It has two pairs of same angles: that means that the opposite sides are parallel: this makes it a parallelogram. 
        
             
        
        
        
-3•-4=12, and -3+-4=-7. 
this will turn into 
(x-3)(x-4)
set them up to equal zero
x-3=0, x-4=0
solve
x=3, x=4
(a)
        
             
        
        
        
Answer:
Principal = Total ÷ (1 + Rate)^years
That formula is found here: http://www.1728.org/compint2.htm
Principal = 3.000 / (1.03) ^ 15
Principal = 3.000 / 1.5579674166
Principal = $1,925.59
Step-by-step explanation: