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Bas_tet [7]
3 years ago
12

Help me please please

Mathematics
2 answers:
Nina [5.8K]3 years ago
8 0
I think it is the first, second, third, and fourth not sure
bija089 [108]3 years ago
5 0
The top one is not because 2 + 3 is 5 and 5 times 2 isnt 12.
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A rancher wishes to build a fence to enclose a rectangular pen having area 24 square yards. Along one side the fence is to be ma
Gnoma [55]

Answer:

The  value  is  C \approx \$76

Step-by-step explanation:

From the question we are told that

   The  area of the rectangular pen is  A =  24 \ yard^2

     The  cost of material used to make one side is  z = \$ 6

    The  cost of material used to make the other sides is  r  =  \$ 3

Now  , the fence to be build around the rectangular pen  has four sides, the first opposite sides are equal, let assume each of the to be x yard   and the other opposite sides are also equal as well let assume of the to be y yard

So the cost is mathematically represented as

       C =  zx  +  r (x + 2y )

=>   C =  6x  +  3(x + 2y)

=>   C =   9x  +  6y

Now the area of the fence is mathematically represented as

      A =  x* y =  24

=>    y  =  \frac{24}{x}

=>  C =   9x  +  6[\frac{24}{x} ]

=>   C =   9x  +  [\frac{144}{x} ]

Now differentiating

     C'  =  9 + 144*  (-2) x^{-2}

     C'  =  9 - 288x^{-2}

At minimum C' =  0

So  

     9 - 288x^{-2} =  0

     x^{-2} =  0.03125

    x =  \sqrt{\frac{1}{0.03125} }

    x =  5.66

Now substituting for x in the equation above to obtain minimum cost

       C =   9(5.66)  +  [\frac{144}{5.66} ]

       C \approx \$76

   

 

8 0
3 years ago
How do I solve for FOIL
Elanso [62]

Answer:

Do the parentheses first. then the operations. Then solve

Step-by-step explanation:

4 0
3 years ago
URGENT!! IS THIS CORRECT????? DEADLINE DUE.
ioda
YESSSS IT ISSSS CORRECTTT!!!!❤️❤️
3 0
3 years ago
Read 2 more answers
What does 4+9+(16 divide 4-8-3) x 5 equal?
stellarik [79]

Answer:

-22

Step-by-step explanation:

4 + 9 + (16 ÷ 4 - 8 - 3) × 5

= 13 + (4 - 8 - 3) × 5

= 13 - 7 × 5

= 13 - 35

= -22

7 0
3 years ago
Se dau punctele coliniare A,B,C cu distanta AB=30 BC=15 .Calculati distanta dintre AsiC.Catr soluti are proclrma?
Arlecino [84]
36 is your answer to that question
5 0
3 years ago
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