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Aliun [14]
3 years ago
14

Find the area of the circle 11 yd

Mathematics
2 answers:
lubasha [3.4K]3 years ago
4 0
11yd is the diameter and circumference is 2πr = 2π(d/2) = πd = 11π yd
Norma-Jean [14]3 years ago
4 0
The answer is 94.98 yd
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8+w/4 when w is 16<br> plz answer it for me plzzz
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Answer:

  1. 8+w/4
  2. Putting w = 16
  3. 8+16/4
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Step-by-step explanation:

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2. A statistics student plans to use a TI-84 Plus calculator on her final exam. From past experience, she estimates that there i
Anarel [89]

Answer:

  1. P(≥1 working) = 0.9936
  2. She raises her odds of completing the exam without failure by a factor of 13.5, from 11.5 : 1 to 155.25 : 1.

Step-by-step explanation:

1. Assuming the failure is in the calculator, not the operator, and the failures are independent, the probability of finishing with at least one working calculator is the complement of the probability that both will fail. That is ...

... P(≥1 working) = 1 - P(both fail) = 1 - P(fail)² = 1 - (1 - 0.92)² = 0.9936

2. The odds in favor of finishing an exam starting with only one calculator are 0.92 : 0.08 = 11.5 : 1.

If two calculators are brought to the exam, the odds in favor of at least one working calculator are 0.9936 : 0.0064 = 155.25 : 1.

This odds ratio is 155.25/11.5 = 13.5 times as good as the odds with only one calculator.

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My assessment is that there is significant gain from bringing a backup. (Personally, I might investigate why the probability of failure is so high. I have not had such bad luck with calculators, which makes me wonder if operator error is involved.)

7 0
3 years ago
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