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WINSTONCH [101]
2 years ago
14

A , B , C , D ??????????????????????

Mathematics
1 answer:
Mila [183]2 years ago
4 0

Answer:

a

Step-by-step explanation:

if this is wrong im sorry

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Mr peterson will buy 80 feet of fencing. The pieces of fence come in whole numbers of feet. His enclosure will be a rectangle an
DIA [1.3K]
The perimeter is:
 P = 2x + 2y = 80
 The area is:
 A = x * y
 The area as a function of a variable is:
 A (x) = x * (40-x)
 Rewriting we have:
 A (x) = 40x-x ^ 2
 We derive the function:
 A '(x) = 40-2x
 We equal zero and clear x:
 40-2x = 0
 2x = 40
 x = 40/2
 x = 20 feet
 The other dimension is:
 y = 40 - x
 y = 40 - 20
 y = 20 feet
 The area will be:
 A = x * y
 A = 20 * 20
 A = 400 feet ^ 2
 Answer:
 
The dimensions are:
 
x = 20 feet
 
y = 20 feet
 
The area is:
 
A = 400 feet ^ 2
5 0
3 years ago
Can I get the answers plz
disa [49]

Answer:

1) yes

2) yes

3) no

6 0
2 years ago
Find the surface area of the prism.
Maurinko [17]

Answer:

326m²

Step-by-step explanation:

Find the area of each side and find the total sum from each individual area:

2(15*4)+2(7*4)+2(7*15)=2(60)+2(28)+2(105)=2(163)=326

So the surface area of the prism is 326m²

5 0
2 years ago
Find the volume of a cylinder that has a radius of 11 m and a height of 9 m.
hjlf

Answer:

The volume would be 3,421.19m

7 0
2 years ago
At which step did Fatu make an error, if at all?
Elza [17]

Answer:

Step 3

Step-by-step explanation:

7 0
2 years ago
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