Mathematics: 30 POINTS find the answer using elimination method! I need help and I don’t understand! The answer will be in (x,y) form

Step-by-step explanation:let the length=xwidth=yP=2(x+y)=128x+y=128/2=64y=64-xarea A=xy=x(64-x)=64x-x²so A or area is maximum if x=32y=64-32=32or it is a square of edge=32 meters....

30 POINTS find the answer using elimination method!

Ответ:

naomicervero

12.03.2021

Mathematics

it says 30 not 15

Step-by-step explanation:

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Ответ:

mariaf0203

06.05.2023

Mathematics

Step-by-step explanation:

let the length=x

width=y

P=2(x+y)=128

x+y=128/2=64

y=64-x

area A=xy=x(64-x)=64x-x²

$\frac{dA}{dx} =64-2x\\\\\frac{dA}{dx} =0,gives~64-2x=0,x=32\\\frac{d^2A}{dx^2} =-2$

so A or area is maximum if x=32

y=64-32=32

or it is a square of edge=32 meters.

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30 POINTS find the answer using elimination method! I need help and I don’t understand! The answer will be in (x,y) form

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