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soldi70 [24.7K]
3 years ago
15

Which choice is the solution?

Mathematics
1 answer:
kifflom [539]3 years ago
8 0
The solution for your answer is 12

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A rectangular poster is to contain 882 square inches of print. The margins at the top and bottom of the poster are to be 2 inche
Zinaida [17]

Answer:

L  =  23 in

h  = 46  in

Step-by-step explanation:

Let call  " x "  and  " y "  dimensions of the print area of the poster then:

882 = x*y  and   y = 882/x

We also know that dimensions of the poster is:

L  =  x + 2   in  and     h  =  y + 4 in

Therefore area of the poster is:

A(p)  = ( x + 2 ) * ( y + 4 )  And area as function of x is:

A(x)  =   ( x + 2 ) * ( 882/x + 4 )

A(x)  =  882 + 4*x + 1764 /x  + 8

Taking derivatives on both sides of the equation we have:

A´(x)  =  4  - 1764/x²

A´(x)  = 0      ⇒      4  - 1764/x² = 0      ⇒ 4*x² - 1764  =  0

x²  =  1764 / 4

x²  = 441

x  = 21 in      and    y  =  882/x         y  = 42

The second derivative  A´´(x)  is > 0  ( the second term changes its sign to +) there is a minimum for the function at the point      x = 21

As x   and  y are dimensions of the printing area of the poster, dimensions of the poster  are

L  = x  +  2   =   21  + 2  =  23 in   and

h = y  +  4   =   42  + 4  =  46  in

4 0
3 years ago
LET me know how you got the answer
andre [41]

6/2*3 / 3(3)

First simplify the numerator: 6/2*3 = 3*3 = 9

Next simplify the denominator: 3(3) = 3*3 = 9

So you have 9/9, which equals 1.


The 3rd answer is correct.

6 0
3 years ago
Read 2 more answers
What is 36,000×10___???and what is 36,000÷10=_____???
AnnyKZ [126]
36000 x 10 = 360000 and 36000/10 = 3600
5 0
3 years ago
Read 2 more answers
Triangle Angle Sum Theorem
Kipish [7]

Answer:

m<DCF = 155°

Step-by-step explanation:

m<DCF = m<D + m<E

m<DCF = 72° + 83°

m<DCF = 155°

7 0
2 years ago
Simplify 3^2 × 3^3. <br><br> A. 36 <br> B. 38 <br> C. 35 <br> D. 3
Alenkinab [10]
3^2 = 9
3^3=27
9 x 27 = 243
Answer:243
4 0
3 years ago
Read 2 more answers
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