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puteri [66]
3 years ago
8

A,b,c travel from Glasgow to Poole. They share the driving in the ratio 2:4:4. A drives 210km. Calculate the total distance driv

en.
Mathematics
1 answer:
ahrayia [7]3 years ago
3 0
A:B:C = 2:4:4

A = 210km

So B & C = 210*2 = 420km

Total distance = 210 + 420 + 420
= 1050km
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The coordinates of vertex B' is P'(x,y) = (-2, -8).

<h3>How to calculate the coordinate of point by reflection</h3>

A point if reflected across the line y = -2 by means of the following formula:

P'(x,y) = P(x,y)+2\cdot [(x_{P}, -2)-P(x,y)] (1)

Where:

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  • P'(x,y) - Resulting point

If we know that P(x,y) = (-2,4) and x_{P} = -2, then the coordinates of the vertex is:

P'(x,y) = (-2, 4) + 2\cdot [(-2,-2)-(-2,4)]

P'(x,y) = (-2, 4) +2\cdot (0, -6)

P'(x,y) = (-2, 4) + (0,-12)

P'(x,y) = (-2, -8)

The coordinates of vertex B' is P'(x,y) = (-2, -8). \blacksquare

To learn more on reflections, we kindly invite to check this verified question: brainly.com/question/1878272

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