Answer:
let mother's age y and daughter age x 
a/q y=3x and y-5=5x-25
put y in second eq we get x=10 &y=30(their present age)
 
        
             
        
        
        
8x + 5 - (4x + 2)
= 8x - 4x + 5 - 2
= 4x + 3
2. 
This is a binomial ( contains 2 terms)
        
                    
             
        
        
        
Answer:
803.84=A 
Step-by-step explanation:
The area of a circle can be found by using the equation  =A.
=A.
 =A
=A
 =A
=A
(3.14)(256)=A
803.84=A  and the units are, how ever the radius is measured cubed
 
        
             
        
        
        
Answer:
   228 cm²
Step-by-step explanation:
The volume of a cylinder of radius r and height h is given by ...
   V = πr²·h
Filling in the given information, we can solve for r:
   235.5 = π·r²·12
   √(235.5/(12π)) = r ≈ 2.49937 . . . . cm
The area of a cylinder is given by ...
   A = 2πr² + 2πrh = 2πr(r +h)
Filling in the radius and height, we can find the area to be ...
   A = 2π·2.49937·(2.49937 +12) ≈ 227.698 . . . . cm²
About 228 cm² of aluminum are required to make a typical soda can.