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4 years ago

HEEEEEELP MEEE PLEASEEEE ;(

Mathematics

2 answers:

BaLLatris [955]4 years ago

7 0

If There is a math equation you can use math-way.

Also it would help if you can take a better picture.

Once you take a better picture I promise i will try my best to answer the question.

frosja888 [35]4 years ago

5 0

Answer:

2 books cause if the total is around 49 dollars 21 is rounded to be half

Step-by-step explanation:

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The floor of a shed given on the right has an area of 85 square feet. The floor is in the shape of a rectangle whose length is 7

lesya692 [45]

Answer: Length = 10 feet and width = 8.5 feet.

Step-by-step explanation:

Let x be the width of the floor.

Then length of the floor = $2x-7$

Given : The area of the floor = 85 square feet

We know that the area of a rectangle is given by :-

$A=l\times w$

$\Rightarrow\ 85=(2x-7)\times x\\\\\Rightarrow\ 2x^2-7x-85=0\\\\\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\\Rightarrow\ x=\dfrac{7\pm\sqrt{49-4(2)(-85)}}{4}\\\\\Rightarrow\ x=\dfrac{7\pm27}{4}\\\\\Rightarrow\ x=\dfrac{17}{2}, -5$

But dimension cannot be negative

So, the width of the floor = $x=\dfrac{17}{2}=8.5\text{ feet}$

And the length of the floor = $2(8.5)-7=10\text{ feet}$

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4 years ago

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AABC is dilated by a factor of 1/2 to produce AA'B'C',

Len [333]

Answer:

your answer will be C. B´C=8. m ZA=28

Step-by-step explanation:

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3 years ago

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olga2289 [7]

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Step-by-step explanation:

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3 years ago

If x =3+2 root 2 find x - 1/x

AveGali [126]

Answer:

-2+2 $\sqrt{2}$

Step-by-step explanation:

Since we have the value of x, 3+2 $\sqrt{2}$ , we can plug that value into the new equation.

We would recieve (3+2 $\sqrt{2}$ -1)/3+2 $\sqrt{2}$

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Phoenix [80]

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3 years ago

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