Suppose Alex has 3x stamps, Freddy has 5x stamps. After Freddy gives Alex 10 stamps, Alex has 3x+10 while Freddy has 5x-10
the new ratio is 7 to 9, so we have the equation: (3x+10)/(5x-10)=7/9
9(3x+10)=7(5x-10)
27x+90=35x-70
160=8x
x=20
So Alex has 3*20=60 stamps while Freddy has 5*20=100. Together they have 160
Answer:
i think it is 234 i am not sure
Step-by-step explanation:
Answer:
-6=m
Step-by-step explanation:
m+6=3m+14
-m -m
6=2m+14
-14 -14
-12=2m
-12/2=-6
<h3>
Total approximately 16 boxes of flooring will be needed in Stanley's living room. </h3>
Step-by-step explanation:
Here the given question is <u>incomplete</u>.
Stanley is having wood flooring installed in his living room. The installer has used 10 1/2 boxes of flooring on 2/3 of the room. How many total boxes of flooring will be needed for Stanley's living room?
The number of boxes used in the two third of room = 
boxes
So, 
room = 10. 5 boxes
So, 1 room = 
So, total approximately 16 boxes of flooring will be needed in Stanley's living room.
Answer:
Surface area of cylinder= 211.5π
Step-by-step explanation:
Given,
Height of cylinder = 19cm
Diameter of cylinder = 9cm
i.e Radius of cylinder = diameter/2 = 9/2 = 4.5cm
Surface area of cylinder = 2πrh + 2πr²
Plug corresponding values of r and h in surface are formula.
Surface area of cylinder = 2πrh + 2πr² = 2π*4.5*19 + 2π*4.5²
Surface area of cylinder = 171π+40.5π = 211.5π
Hence we get surface area of cylinder= 211.5π
