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steposvetlana [31]
4 years ago
6

Hope someone can help me with this

Mathematics
2 answers:
sergeinik [125]4 years ago
6 0

That would be Nets 1, 4 and 5.

klio [65]4 years ago
6 0
Net 1 is the answer to this question
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Zina [86]

Answer:

A. 40

Step-by-step explanation:

A line is equal to 180 degrees. So 180-20=160. 4x=160, x=40

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Anastaziya [24]

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Step-by-step explanation:

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Find the zeros of the function f(x)=x2+2x-3
Lerok [7]

Answer:

x = -1 and x = 3

Step-by-step explanation:

f(x)= x^2-2x-3

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3 years ago
A rectangular piece of land borders a wall. The land is to be enclosed and to be into divided 3 equal plots with 200 feet of fen
baherus [9]

Answer:

Area = 2500 square feet is the largest area enclosed

Step-by-step explanation:

A rectangular piece of land borders a wall. The land is to be enclosed and to be into divided 3 equal plots with 200 feet of fencing

Let x be the length of each box and y be the width of the box

Perimeter of the box= 3(length ) + 4(width)

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solve for y

200=3x+4y

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divide both sides by 4

y=50-\frac{3x}{4}

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Area = 3x \cdot (50-\frac{3x}{4})

A=150x-\frac{9x^2}{4}

Now take derivative

A'=150-\frac{9x}{2}

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0=150-\frac{9x}{2}

150=\frac{9x}{2}

multiply both sides by 2/9

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A''=-\frac{9}{2}

For any value of x, second derivative is negative

So maximum at x= 100/3

 A=150x-\frac{9x^2}{4} , replace the value of x

A=150(\frac{100}{3})-\frac{9(\frac{100}{3})^2}{4})

Area = 2500 square feet is the largest area enclosed

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3 years ago
How many 1/4 hours are in a 1 hour
Rufina [12.5K]
15 1/4 hours are in 1 hour
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3 years ago
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