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Klio2033 [76]
3 years ago
9

The point A (−5,4) is reflected over the point (−2,5) and its image is point B. What are the coordinates of point B?

Mathematics
1 answer:
san4es73 [151]3 years ago
3 0

Answer:

<em>The coordinates of B are (1,6)</em>

Step-by-step explanation:

<u>Point Reflection</u>

Given the point P(x,y) and its reflection P'(x',y') with respect to the point C(xc,yc), C is the midpoint of the segment PP'.

This means the coordinates of C are:

\displaystyle x_c=\frac{x+x'}{2}

\displaystyle y_c=\frac{y+y'}{2}

If the coordinates of the midpoint are given, then the endpoint P' can be found solving for x' and y':

x'=2x_c-x

y'=2y_c-y

The point P' is the reflection of P over C.

We are given the coordinates of A(-5,4) and the point (-2,5). We need to find the coordinates of point B(x',y'). Let's use the formulas as if A was point P and C=(-2,5):

x'=2(-2)-(-5)=-4+5=1

y'=2(5)-4=10-4=6

The coordinates of B are (1,6)

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Step-by-step explanation:

Data provided in the question:

There are nine golf balls numbered from 1 to 9 in a bag

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= ^nP_r

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r = 3

= ⁹P₃

= \frac{9!}{9!-3!}

= 9 × 8 × 7

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=  _ _ _

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therefore,

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