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2 years ago

Pleaase help me because i really need it

Mathematics

2 answers:

MrMuchimi2 years ago

5 0

Answer:

B and C are both correct

Step-by-step explanation:

18/6 = 3

h¹⁰/h¹² = h⁽¹⁰⁻¹²⁾ = h⁻² = 1/h²

the a⁻⁴ term remains unchanged and = 1/a⁴

3a⁻⁴h⁻² = $\frac{3}{a^4h^2}$

GarryVolchara [31]2 years ago

4 0

Answer:

C is the answer.

Step-by-step explanation:

3a-4 h-2

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An open-top box with a square base is to have a volume of 4 cubic feet. Find the dimensions of the box (in ft) that can be made

Lemur [1.5K]

Answer:

The dimension of box= $2ft\times 2ft\times 1ft$

Step-by-step explanation:

We are given that

Volume of box=4 cubic feet

Let x be the side of square base and h be the height of box

Volume of box= $lbh=x^2h$

$4=x^2h$

$h=\frac{4}{x^2}$

Now, surface area of box,A= $x^2+4xh$

$A=x^2+4x(\frac{4}{x^2})=x^2+\frac{16}{x}$

$\frac{dA}{dx}=2x-\frac{16}{x^2}$

$\frac{dA}{dx}=0$

$2x-\frac{16}{x^2}=0$

$2x=\frac{16}{x^2}$

$x^3=8$

$x=2$

$\frac{d^2A}{dx^2}=2+\frac{32}{x^3}$

Substitute x=2

$\frac{d^2A}{dx^2}=2+\frac{32}{2^3}=2+4=6>0$

Hence, the area of box is minimum at x=2

Therefore, side of square base,x=2 ft

Height of box,h= $\frac{4}{2^2}=1 ft$

Hence, the dimension of box= $2ft\times 2ft\times 1ft$

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2 years ago

What is the volume of the prism below? 12 in 16 in 9 in

Inga [223]

Answer:

1728 units cubed

Step-by-step explanation:

V = LWH
V = 12x16x9
V = 1728

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2 years ago

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Lelu [443]

You are going to get the rate of the detects.
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3 years ago

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Paraphin [41]

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3 years ago

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Mandarinka [93]

8920000000.
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