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balandron [24]
3 years ago
7

How many roots does y=x^2-4x+6 have

Mathematics
1 answer:
pochemuha3 years ago
7 0
Δ<<span>0 i think this is right</span>
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A new park was designed to contain two circular gardens. Garden A has a diameter of 50m and garden B has diameter of 70m if the
Novosadov [1.4K]

Answer:

  157

Step-by-step explanation:

The circumference of a circle with diameter d is given by ...

  C = πd

The circumference of a 50 meter circle will be ...

  C = π(50 m) ≈ 157.08 m

It will take about 157 meters of edging to outline the smaller garden.

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Coach and is setting up a 2.7 km race she uses flags to mark off 9 equal sections of the race how far apart should she space the
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Step-by-step explanation:

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3 years ago
The current of the Naboo River has speed 2 mph. It takes Senator Amidala's boat a total of 3 hours to travel 8 miles upstream an
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3 years ago
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Softa [21]
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6 0
3 years ago
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A rectangle is 6 feet long and 4 feet wide. If each dimension is increased by the same number of feet, a new rectangle is formed
Fofino [41]

Answer:

Each dimension increased by 3 ft.

Step-by-step explanation:

Area of the original rectangle = 4 * 6 = 24 square feet

Increased dimension = x ft

New length = 6 + x

New width = 4 +x

New area = (6 + x)(4 +x)    {Use FOIL method}

                = 6*4 + 6*x + x*4 + x*x

                = 24 + 6x + 4x + x²

                = x² + 10x + 24

New area = 24 + 39

x² + 10x + 24 = 63

x² +10x + 24 - 63 = 0

x² + 10x  - 39 = 0

x² + 13x - 3x  - 3*13 = 0

x (x + 13) - 3(x + 13) = 0

(x + 13)(x -3) = 0   {Ignore x + 13, as it gives negative value}

x - 3 = 0

x = 3

5 0
3 years ago
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