Mathematics: -8(-6x+w-4) distributive property

-8(-6x+w-4) distributive property - id86414779019, kyaisaambrose6211

chloegrace359

24.11.2021

Apply distributive property:

$-8\left(-6x+w-4\right)$

$-8\left(-6x\right)-8w-8\left(-4\right)$

$\boxed{48x-8w+32}$

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MayFlowers

14.08.2020

Step-by-step explanation:

Lets suppose the one side be x and the other side of the rectangle be y

given area x*y=650ft^2

implies x = 650/y

Cost = 2*4*x+2*3*y=8x+6y

= 8*650/y + 6y

= 5200/y + 6y

upon differentiating we get

= -5200/y^2 + 6=0

y^2 = 2600/3

y= $10\sqrt{26/3}$ = 43.3

x= 15

C(43.3)= 10400/(43.3)^3 >0 hence it is a minima value

optimizing the result we get

Cost = 8*15+6*43.3 =$ 379.8

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