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salantis [7]
3 years ago
10

Which graph shows rotational symmetry?

Mathematics
2 answers:
Ugo [173]3 years ago
7 0

Answer:

A

Step-by-step explanation:

Maurinko [17]3 years ago
5 0

Answer:

A

Step-by-step explanation:

When you turn it 180 degrees, it looks the same.

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A car travels 13 km in south east direction and then 16 km 40° north of east. Find the cars resultant direction. PLEASE HELP! AL
Neporo4naja [7]

Answer:

  about 2.9° north of east

Step-by-step explanation:

If we orient the directions so north is in the +y direction and east is in the +x direction, the car is traveling 13 km at an angle of -45°, then 16 km at an angle of +40°. We can add these vectors by adding their components in the x- and y-directions.

  13(cos(-45°), sin(-45°)) ≈ (9.19239, -9.19239)

  16(cos(40°), sin(40°)) ≈ (12.25671, 10.28460)

The sum of these vectors is then ...

  = (21.44910, 1.09221)

and the resultant angle is ...

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The resultant direction is about 2.9° north of east.

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3 years ago
Which of the following systems of equations is an example of one where substitution is the best method?
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Answer:

The answer is option D.

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Step-by-step explanation:

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