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hammer [34]
3 years ago
6

How do you find the radius of a circle that has a circumference of 69.1?

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
8 0

Answer:

the anwser is 11

Step-by-step explanation:

You have to multiply 3.14 (pi) by The radius which is 69.1 and you will get your anwser. So it should look like this

A= pi r2

————— = 3.14(pi) x r2

r2 = 69.1

r = 11

hope this helps!!!! :)

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How quickly do synthetic fabrics such as polyester decay in landfills? A researcher buried polyester strips in thes oil for diff
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Answer:

no enough evidence to draw up a conclusion

Step-by-step explanation:

Data:

let: \mu _{1} = decay after 2 weeks

    \mu _{2} = decay after 16 weeks

Making the hypotheses:

Null hypothesis; H_{o} = \mu _{1}  - \mu _{2} = 0

the deviation = 0.05

the standard difference  = 4

Conditions:

The normal distribution curve can be plotted on a graph and the plot shows that the distribution is a skewed distribution.

Then,

t = \frac{(123.8-16.4)-0}{\sqrt{\frac{4.6^{2} }{5}+\frac{16.09^{2} }{5}   } } \\  = 0.989

Therefore, it can be concluded that 0.1983 > 0.05. This presents our failure to reject the null hypothesis.

Thus, there is not enough evidence to conclude that polyester decays more in less than 2 weeks.

5 0
2 years ago
A single letter from the word zookeeper is chosen. What is the probability of choosing k or an e? Express your answer as a fract
Westkost [7]

Answer:

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4 0
3 years ago
Given that 3 or more packages contain a substantial number of broken cookies, what is the probability that exactly 4 packages co
ahrayia [7]
The problem above is an example of conditional probability. From the name itself, it gives you a condition that a certain event has already happen, or is sure to happen. In this case, the probability would be 100% or 1. The condition says that the probability is 100% if the packages are more than 3. Since, 4 is considered to be more than 3, then the probability is 100%.
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2 years ago
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Over [174]

Answer:

Step-by-step explanation:

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Graph done with paint, obviously not to scale.

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2 years ago
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