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Alexus [3.1K]
3 years ago
7

Which angle of rotation is an angle of rotational symmetry for all figures?

Mathematics
2 answers:
Alecsey [184]3 years ago
7 0

Answer:

360°

Step-by-step explanation:

Any figure can map onto itself by rotating it 360°.

AVprozaik [17]3 years ago
4 0

Answer:

360

Step-by-step explanation:

i took the test

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6. Benny earns $12.00 per hour as a lifeguard. He earns a bonus of $75.00
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Answer:

75+12h ≥ 399

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Step-by-step explanation:

How much does benny earn

He makes 75 for the course plus 12 dollars an hour

75+ 12h

This must be at least 399

75+12h ≥ 399

Subtract 75 from each side

75-75+12h ≥ 399-75

12h ≥ 324

Divide each side by 12

12h/12 ≥ 324/12

h ≥ 27

He must work at least 27 hour

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3 years ago
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Problem 5.A miner is trapped inside a mine and has access to 3 doors. The first door leads to a tunneland can take him to safety
Likurg_2 [28]

Answer:

Expected time is 15 hours for him to get to safety.

Step-by-step explanation:

We define X as the time that this miner would get to safety.

We define Y as the door he chooses initially.

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Then we have

E[X] = 1/3(3 + 5 + E[X] + 7 + E[X])

We cross multiply

3*E[X] = (15 + 2E[x])

3E[X] - 2E[X] = 15

E[X] = 15

So the time it would take to get him to safety is 15 hours

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