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Oksana_A [137]
3 years ago
9

When a LINE SEGMENT is reflected over a line of symmetry, what is changing?

Mathematics
1 answer:
sladkih [1.3K]3 years ago
6 0

Answer:

The correct answer would be C. The coordinates of the ENDPOINTS of the segment​

Step-by-step explanation:

It cannot be A, because the segment only moves. It does not change size.

It cannot be B, because the line of symmetry goes down the middle of the segment- the distance remains the same.

Therefore it is C. The coordinates of the ENDPOINTS of the segment​

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What is the rectangular form of z= 40(cos(7pi/6)+ i sin(7pi/6))
Anastaziya [24]

Answer:

C. z = -20\sqrt{3}-i\,20

Step-by-step explanation:

The rectangular form of a complex number is represented by the following formula:

z = a+i\,b (1)

Where each coefficient can be determined as function of the polar components:

a = r\cdot \cos \theta (2)

b = r\cdot \sin \theta (3)

Where:

r - Magnitude of the complex number, dimensionless.

\theta - Direction of the complex number, measured in radians.

If we know that r = 40 and \theta = \frac{7\pi}{6}, then the rectangular form of the number is:

a = 40\cdot \cos \frac{7\pi}{6}

a = -20\sqrt{3}

b = 40\cdot \sin \frac{7\pi}{6}

b = -20

The rectangular form of z=40\cdot\left(\cos \frac{7\pi}{6}+i\,\sin \frac{7\pi}{6}\right) is z = -20\sqrt{3}-i\,20. The correct answer is C.

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What is the simplest form of this expression? -x^3(5x+1)+4x^4
Fantom [35]

Answer:

-x^3*(x + 1)

Step-by-step explanation:

Perform the indicated multiplication and then write out all the terms in descending order by powers of x:

-x^3(5x+1)+4x^4  =  -5x^4 - x^3 + 4x^4

                            =  -x^4 - x^3, or = -x^3*(x + 1)  

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A crystal shaped like a rectangular prism has a volume of 2.88 cubic centimeters. The crystal has a square base with an area of
Alex Ar [27]
V=LWH
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divide 1.44
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3 years ago
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