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Galina-37 [17]
3 years ago
12

Help pleaseeeeeeeeee

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
5 0

9514 1404 393

Answer:

  47 -6√10

Step-by-step explanation:

As you know, the area of a square is the square of the side length. It can be helpful here to make use of the form for the square of a binomial.

  (a -b)² = a² - 2ab + b²

  (√2 -3√5)² = (√2)² - 2(√2)(3√5) + (3√5)²

  = 2 - 6√10 + 3²(5)

  = 47 -6√10

__

<em>Check</em>

  √2-3√5 ≈ -5.29399 . . . . . . . . note that a negative value for side length makes no sense, so this isn't about geometry, it's about binomials and radicals

  (√2-3√5)² ≈ 28.02633

  47 -6√10 ≈ 28.02633

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Please help I will mark Brainiest (No links please)
KatRina [158]

Answer:

72 bags

Step-by-step explanation:

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4 0
3 years ago
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An Olympic -size swimming pool in the shape of a rectangular solid has a volume of 3150 cubic meters,, a length of 70 meters,, a
Lyrx [107]
Volume=length*width*depth.
=>
3150=70*35*D
=>
D=3150/(70*35)
=9/7 m
=1.286m

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5 0
3 years ago
Let f(x)=e^x+3 <br> show that f^-1(x)=ln x-3<br> can someone explain this to me
andrey2020 [161]

Explanation:

For a function ...

  y = f(x)

the inverse function is ...

  x = f(y)

To write that in the form y=f^-1(x), you need to solve for y.

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  x = e^y +3

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So, we can write ...

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Attached is a graph of these functions. As you might guess from the interchange of x and y, a function and its inverse are mirror images of each other across the line y=x.

3 0
4 years ago
Can you heeelp??? plz ;_(
pashok25 [27]

Answer:

85

Step-by-step explanation:

1/2(6x5) = 15

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8 0
3 years ago
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Find the surface area of this rectangular prism. Be sure to include the correct unit in your answer.
nlexa [21]

Answer:

190 ft^2

Step-by-step explanation:

So first we need to find which equation we're using and since it's a rectangular prism we're going to use:

2Lw + 2wh + 2Lh

Now what we need to do is plug in the values

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Once you add everything together you get:

190

The question says to include the correct unit. It says that its feet, but we need to know if its feet squared (^2) or cubed (^3)

If it were area of the whole object, it would be cubed because it is all the area that the object takes up but since it's just the area of the surface it's going to be squared. Therefore, the answer is:

190 ft^2

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3 years ago
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