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lys-0071 [83]
3 years ago
9

4x^2-x-3=0 solve by completing the square x= ??

Mathematics
1 answer:
PIT_PIT [208]3 years ago
4 0
Hello,

4x²-x-3=0
==>(2x)²-2*1/2*x+1/4-3-1/4=0
==>(2x-1/2)²-13/4=0
==>(4x-1)²-13=0
==>(4x-1-√13)(4x-1+√13)=0
==> x=(1+√13)/4 or x=(1-√13)/4



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Answer:

Option C

Step-by-step explanation:

We will analyze the figure and note down the properties given in the figure,

1). LK is a diameter so this line (chord) divides the circle into two arcs measuring 180°.

m(arc LJK) = m(arc LK) = 180°

2). m(∠JKL) = 28°

Therefore, by the property inscribed angle and intercepted arcs,

Intercepted arc (JL) = 2 × (Inscribed angle JKL)

m(arc JL) = 2(26°)

               = 52°

Now we will use these two points to get the measure of arc JK.

m(arc JK) + m(arc LK) + m(arc JL) = 360°

m(arc JK) + 180° + 52° = 360°

m(arc JK) = 360° - 232°

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Option C will be the correct option.

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3 years ago
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ladessa [460]

Answer:

18/20π

Step-by-step explanation:

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You do this because the radius is half of the diameter and you need to get rid of the hight by dividing it from the volume.

7 0
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Anuta_ua [19.1K]
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arlik [135]

Answer:

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Step-by-step explanation:

John has 4/5​ of a pound of dog food left to share equally among 6 dogs in his pet shop. ​How many pounds of food can he give to each dog?

From the above question, we can deduce that:

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x pounds = 4/5 ÷ 6

x pounds= 4/5 × 1/6

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