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Archy [21]
4 years ago
6

Choose the correct equation type for each system. (Equivalent, Inconsistent, Consistent)

Mathematics
2 answers:
JulijaS [17]4 years ago
8 0
Inconsistent
Equivalent
Inconsistent
Consistent
Consistent
Equivalent
Murrr4er [49]4 years ago
5 0

Solution:

Equivalent= When two lines are coincident , they are said to be Equivalent.

Inconsistent= When two lines are parallel , they are said to be Inconsistent.

Consistent=  When two lines are intersecting, they are said to be consistent.

1. {(y=3x-2),(3x-y+4):}

y=3x-2, y = 3x +4

Both lines have same slope, i.e 3 , they are parallel.(Inconsistent)

2. {((1)/(2)y=-x+5),(2y=-4x+20):}

y = -2 x +10, y = - 2 x + 10

Both lines have same slope, i.e (-2) , they are Coincident.(Equivalent)

3. {(y=-x+4),(x=-y-6):}

y= -x + 4, y = -x -6

Both lines have same slope, i.e (-1) , they are parallel.(Inconsistent)

4. {(y=4x+2),(y=6x-10):}

Both lines have different slope.They are intersecting lines.(Consistent)

5. {(y=2x+1),(y=-2x+3):}

Both lines have different slope.They are intersecting lines.(Consistent)

6. {(-2x+5y=0),(y=(2)/(5)x):}

y=\frac{2x}{5}, y=\frac{2x}{5}

Both lines have same slope, i.e (\frac{2x}{5}) , they are parallel.(Inconsistent)

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9514 1404 393

Answer:

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Step-by-step explanation:

We can write relations for the height of the rail as a function of initial length and expanded length, but the solution cannot be found algebraically. A graphical solution or iterative solution is possible.

Referring to the figure in the second attachment, we can write a relation between the angle value α and the height of the circular arc as ...

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Then the length of the expanded rail is ...

  s = r(2α) = (c/sin(2α)(2α) . . . . . . where s = half the expanded rail length

Rearranging this last equation, we have ...

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It is this equation that must be solved iteratively. We find the solution to be ...

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So, the height of the circular arc is ...

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The rail will bow upward by about 44.5 feet.

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Note that s and c in the diagram are half the lengths of the arc and the chord, respectively. The ratio of half-lengths is the same as the ratio of full lengths: c/s = 2640/2640.5 = 5280/5281.

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