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solniwko [45]
3 years ago
13

Please help answer!!!! will try and give brainliest if i can. need all four answers!

Mathematics
1 answer:
Ivahew [28]3 years ago
6 0

Answer:

a is option c

b is 17.5

c is 9

Step-by-step explanation:

I do not know if all of these are right

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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:
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 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
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 Answer:
 
The dimensions are:
 
x = 20 feet
 
y = 20 feet
 
The area is:
 
A = 400 feet ^ 2
5 0
3 years ago
Rewrite in simplest terms -5(3u + 1) + 10
Luda [366]

Answer:

-15u+5

Step-by-step explanation:

  1. open up the bracket -15u-5+10
  2. liketerms together -15u+5
  3. hence answer is -15u+5
8 0
3 years ago
What is the common denominator as a fraction of 5/4 and 11/16
trasher [3.6K]
16 is the greatest common denominator
7 0
3 years ago
Read 2 more answers
Help please I GIVE LOTS OF POINTS
stiks02 [169]

Question 1 C

Question 2 D

Question 3 B

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B4x%20-%201%7D%7B2%7D%20%20%3D%20x%20%2B%207%20%5C%5C%20" id="TexFormula1" title="
AlekseyPX

Answer:

x=\frac{15}{2}=7.5

Step-by-step explanation:

See image.

8 0
3 years ago
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