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3 years ago

What division equation represents the model

Mathematics

2 answers:

kolezko [41]3 years ago

8 0

<em>Your in elementary school- this level is for like </em><em>3rd graders</em><em>, not for high-schoolers.</em>

<em>p = 1/2 divided by 1/6 is the answer by the way.</em>

Elodia [21]3 years ago

6 0

I think it’s 1/2 divided by 2

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Find the dimensions of an open rectangular box with a square base that holds 2000 cubic cm and is constructed with the least bui

Vesnalui [34]

<h3>The dimensions of the given rectangular box are:</h3><h3>L = 15.874 cm , B = 15.874 cm , H = 7.8937 cm</h3>

Step-by-step explanation:

Let us assume that the dimension of the square base = S x S

Let us assume the height of the rectangular base = H

So, the total area of the open rectangular box

= Area of the base + 4 x ( Area of the adjacent faces)

= S x S + 4 ( S x H) = S² + 4 SH ..... (1)

Also, Area of the box = S x S x H = S²H

⇒ S²H = 2000

$\implies H = \frac{2000}{S^2}$

Substituting the value of H in (1), we get:

$A = S^2 + 4 SH = S^2 + 4 S(\frac{2000}{S^2}) = S^2 + (\frac{8000}{S})\\\implies A = S^2 + (\frac{8000}{S})$

Now, to minimize the area put :

$(\frac{dA}{dS} ) = 0 \implies 2S - \frac{8000}{S^2} = 0\\\implies S^3 = 4000\\\implies S = 15.874 \approx 16 cm$

Putting the value of S = 15.874 cm in the value of H , we get:

$\implies H = \frac{2000}{S^2} = \frac{2000}{(15.874)^2} = 7.8937 cm$

Hence, the dimensions of the given rectangular box are:

L = 15.874 cm

B = 15.874 cm

H = 7.8937 cm

3 0

3 years ago

Solve x square − 10 x + 35 by completing the square.

Doss [256]

Answer: X=0.28571428571

Step-by-step explanation:

-10x divide by 10 =x , -10 divide by 35=0.28571428571

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IrinaK [193]

D, it makes the most sense

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Ivanshal [37]

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3 years ago

5x-4y=19<br> x-2y=8<br> Can someone please help me :)))<br> Tenkss x

agasfer [191]

Answer:

x=1/3

Step-by-step explanation:

5x-4y=19

2(2x-4y)=(9)2

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3x=1

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