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earnstyle [38]
3 years ago
8

Does this graph represent a function? Why or why not? Sey A. No, because it fails the vertical line test. B. Yes, because it has

two straight lines. C. Yes, because it passes the vertical line test. D. No, because it is not a straight line​

Mathematics
1 answer:
Fittoniya [83]3 years ago
7 0

Answer: it’s A..

Step-by-step explanation:

No, because it fails the vertical line test.

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Lilit [14]

Answer:

x^2 -81

Step-by-step explanation:

(x+9)(x-9)

FOIL

first x*x = x^2

outer -9x

inner 9x

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Add them together

x^2 -9x+9x -81

Combine like terms

x^2 -81

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3 years ago
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A bird with a mass of 1.5 kg flies at a rate of 4.0 m/s. What is the kinetic energy of the bird?
weqwewe [10]
The answer is 12 J.

The kinetic energy (KE) of an object is expressed as the product of half of the mass (m) of the object and the square of its velocity (v²):
KE =  \frac{1}{2} m*v^{2}

The unit of the kinetic energy is Joules (J = kg · (m/s)²).

It is given:
m = 1.5 kg
v = 4 m/s

It is unknown:
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Thus:
KE = \frac{1}{2} m*v^{2}
<span>KE = \frac{1}{2} 1.5kg*(4 m/s)^{2}</span>
<span>KE = 0.75kg*16(m/s)^{2}</span>
KE = 12 kg*(m/s)^{2}
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Therefore, the kinetic energy of the bird is 12J.
3 0
3 years ago
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(5x-4)(x+1) multiply then simplify
viva [34]

Answer:

5x^2+x-4

Step-by-step explanation:

Multiply 5x into (x+1)

to get 5x^2+5x

Multiply -4 into (x+1)

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Combine like terms

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Answer:

5x^2+x-4

3 0
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A is your answer I know
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Leno4ka [110]

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Step-by-step explanation:

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3 0
3 years ago
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