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faust18 [17]
4 years ago
11

Which represents the statement “the day is Tuesday or Thursday if she comes to work?

Mathematics
1 answer:
forsale [732]4 years ago
7 0

Answer:

who is ready for summa

Step-by-step explanation:

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kolbaska11 [484]

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The fully factored form is 3(x^2 - 7))

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Write the general equation for the circle that passes through the points: (1, 7) (8, 6) (7, -1)
Naddika [18.5K]

Answer:

x^{2} +y^{2} +(-8)\times x+ (-6)\times y = 0  

Step-by-step explanation:

General equation of circle is x^{2} +y^{2} +2\times g \times x+2\times f\times y+c = 0   ---------------------(1)

This circle passes through the given three points, (1,7) , (8,6) and (7,-1).

Substitute (1,7) in (1),

1 + 7^{2} +2\times g\times 1 + 2\times f\times 7 +c =0

2g + 14f + c = -50     -------------(2)

Substitute (8,6) in (1),

8^{2} + 6^{2} +2\times g \times 8+2\times f\times 6 +c=0

16g + 12f + c = -100    -----------(3)

Substitute (7,-1) in (1),

7^{2} + (-1)^{2} +2\times g \times 7+2\times f\times (-1) +c=0

14g - 2f + c = -50    ---------------(4)

Solving (2),(3) amd (4) simultaneously,

g = -4

f = -3

c = 0

Equation of circle is

x^{2} +y^{2} +(-8)\times x+ (-6)\times y = 0  

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Step-by-step explanation:

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Step-by-step explanation:

Hope this helps

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