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Romashka-Z-Leto [24]
3 years ago
10

Determine area of the peice

Mathematics
2 answers:
Rasek [7]3 years ago
8 0
79.56 is the answer.
katen-ka-za [31]3 years ago
3 0
The answer is 79.56.
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18=3(1+12 x)-5(10x+11)
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18=3+36x-50x-55

18=3-14x-55

18=-14x-52

70=-14x

x=-5
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What is the volume of sphere with a 10 inch radius?
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The answer is 4188.79 inches
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A 4-lb. force acting in the direction of (vector) 4,-2 moves an object just over 7ft from point (0,4) to (5,-1). Find the work d
Tcecarenko [31]

To solve this problem, we have to find the net displacement and the net force and the multiply the dot product together and get the work done.

The work done on moving the object is 27ft*lbs

<h3>Work done in moving the object from point A to point B</h3>

To find the work done on this object, let's find the net force on the object.

Data;

  • force = 4lb
  • direction = 4, -2
  • displacement = 7ft
  • direction = (0, 4) to (5,1)

The unit vector of the force is

\sqrt{4^2 +(-2)^2} =\sqrt{16 + 4} = \sqrt{20}

\frac{4}{\sqrt{20} }, \frac{-2}{\sqrt{20} }

The net force acting on the object is

F = 4(\frac{4}{\sqrt{20} }, \frac{-2}{\sqrt{20} })\\F= (\frac{16}{\sqrt{20} }, \frac{-8}{\sqrt{20} } )

The displacement on the object is 7ft through (0,4) to (5, -1)

The unit vector on displacement is

\sqrt{5^2 + (-1-4)^2} = \sqrt{25+25} = \sqrt{50}

\frac{5}{\sqrt{50} }, \frac{-5}{\sqrt{50} }

The net displacement will be

7(\frac{5}{\sqrt{50} }, \frac{-5}{\sqrt{50} }) = \frac{35}{\sqrt{50} }, \frac{-35}{50}

The work done will be F.d

w = f. d \\

w = (\frac{16}{\sqrt{20} }, \frac{-8}{\sqrt{20} } ) * \frac{35}{\sqrt{50} }, \frac{-35}{50}\\w = 17.71+ 8.854\\w = 26.567 = 27ft*lbs

The work done on moving the object is 27ft*lbs

Learn more on work done on an object here;

brainly.com/question/26152883

#SPJ1

6 0
2 years ago
While solving the
kvv77 [185]

Answer:

Multiplication of Alzebra

method has been used by Natalie

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2 years ago
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Why is a three dimensional figure with a curved surface is not a polyhedron
kaheart [24]
A polyhedron is formed by intersecting planes.  That means that each part of its surface is a vertex, edge, or a flat piece of a plane.
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2 years ago
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