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liubo4ka [24]
4 years ago
13

Find any domain restrictions on the given rational equation

Mathematics
1 answer:
jonny [76]4 years ago
3 0

Answer:

A:x=3

B:x=-4

Step-by-step explanation:

The domain is set of all values of x for which the given rational function is defined.

The rational equation is

\frac{50}{4x - 12} + \frac{x - 4}{ {x}^{2} + x  -  12 } =  \frac{x}{2}

The rational function will not be defined if the denominator is zero.

That is if:

1.

4x - 12 = 0 \implies 4x = 12\implies \: x = 3

2.

{x}^{2}  + x - 12 = 0\implies (x - 3)(x + 4)

This implies that x=3 or x =-4

Therefore the equation is defined on all real values of x, except x=3 or-4

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abruzzese [7]

We turn -5,12 into polar coordinates.  It's a Pythagorean Triple so

r = 13   Ф=arctan(-12/5) + 180°   ( in the second quadrant )

so -5 = 13 cos Ф, 12 = 13 sin Ф

12 sin x - 5 cos x = 6.5

13 sinФ sin x + 13 cos Ф cos x = 6.5  

13 cos(x - Ф) = 6.5

cos(x - Ф) = 1/2

cos(x - Ф) = cos 60°

x - Ф = ± 60° + 360° k     integer k

x = Ф ± 60° + 360° k  

x = 180° + arctan(-12/5) ± 60° + 360° k  

That's the exact answer;

x ≈  180° - 67.38° ± 60° + 360° k  

x ≈  122.62° ± 60° + 360° k  

x ≈  { 62.62°, 182.62°} + 360° k,  integer k

3 0
3 years ago
Help please 4, 5, 6.......
Assoli18 [71]

4.  Supplementary angles together make a straight line (two right angles).  So BOE is supplementary to BOC

Answer: ∠BOE

5. Distance and midpoint between (4,-2), (6,8)

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midpoint

\left(\dfrac{4 + 6}{2}, \dfrac{-2 + 8}{2} \right) = (5, 3)

Answer: distance 2√26, midpoint  (5, 3)

6.That's a rectangle oriented parallel to the axes, width parallel to the x axis of 7 - -3 = 10 and length along y of  1 - - 4 = 5, so an area of 10(5)=50

Answer: 50

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4 years ago
A school theater can sell 87 tickets for show. if 9 have been sold how many tickets are still left to be sold
shutvik [7]

Answer:

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Step-by-step explanation:

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3 years ago
The volume of a rectangular prism is 2,058 cubic cm. The length of the prism is 3 times the width. The height is twice the width
liraira [26]
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