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Zolol [24]
3 years ago
13

What is the area of the the polygon 7ft 22ft 10ft

Mathematics
1 answer:
Harman [31]3 years ago
3 0

Answer:1540

Step-by-step explanation:

7x10=70

70x22=1540

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Answer:

{x | x R, x > -5}

Step-by-step explanation:

Given:

x-5>-10

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x-5+5>-10+5\\x>-5

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harkovskaia [24]

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f(x)=(3x-6)(-4x+2)

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f(x)=(3x)(-4x)+(3x)(2)+(-6)(-4x)+(-6)(2)\\f(x)=-12x^{2}+6x+24x-12\\f(x)=-12x^{2}+30x-12

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Masteriza [31]
<h3>Answers:</h3>
  • (a) True
  • (b) True
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========================================================

Explanations:

------------------------------

Part (a)

Applying a rotation will not change the length of XY. This means segment X'Y is the same length as segment XY.

Put another way:  (distance from X to Y) = (distance from X' to Y)

So if we have Y as the center of the circle, and XY as the radius, then X and X' are both on the same circle.

------------------------------

Part (b)

As explained in part (a), the segments XY and X'Y are both radii of the same circle, so they are equal to one another.

------------------------------

Part (c)

Draw a right triangle with side lengths XY, X'Y and hypotenuse XX'

Note how a 45-45-90 triangle forms. We can use the pythagorean theorem to show that XX' is larger than XY. Therefore, XX' and XY aren't equal.

------------------------------

Part (d)

This angle forms because we rotated point X 90 degrees with the center point as Y. It might help to think of point Y at the origin. So that's why this statement is true.

------------------------------

Part (e)

This is false because segment X'Y or YX' is a radius and not a diameter. We would need to multiply by 2 to get a diameter.

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