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PIT_PIT [208]
3 years ago
14

Whats 9+10 ?A)12B)21C)19D)9​

Mathematics
2 answers:
Ostrovityanka [42]3 years ago
4 0

Answer: 21

Step-by-step explanation: (If you're serious it's 19)

Murljashka [212]3 years ago
4 0
21 should be the right answer and if not then 19
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3 0
3 years ago
A rancher wants to fence in an area of 1500000 square feet in a rectangular field and then divide it in half with a fence down t
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Answer:

6000 ft

Step-by-step explanation:

Let length of rectangular field=x

Breadth of rectangular field=y

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Area of rectangular field=l\times b

Area of rectangular field=x\time y

1500000=xy

y=\frac{1500000}{x}

Fencing used ,P(x)=x+x+y+y+y=2x+3y

Substitute the value of y

P(x)=2x+3(\frac{1500000}{x})

P(x)=2x+\frac{4500000}{x}

Differentiate w.r.t x

P'(x)=2-\frac{4500000}{x^2}

Using formula:\frac{dx^n}{dx}=nx^{n-1}

P'(x)=0

2-\frac{4500000}{x^2}=0

\frac{4500000}{x^2}=2

x^2=\frac{4500000}{2}=2250000

x=\sqrt{2250000}=1500

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Again differentiate w.r.t x

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Substitute x=1500

P''(1500)=\frac{9000000}{(1500)^3}>0

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Hence, the shortest length of fence that the rancher can used=6000 ft

3 0
3 years ago
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