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Damm [24]
3 years ago
10

Given two different circles O and Q, which of the following cases presents two circles with no (zero) common tangents?

Mathematics
2 answers:
devlian [24]3 years ago
6 0

concentric circles

Answer:

concentric circles

Step-by-step explanation:

borishaifa [10]3 years ago
3 0
Concentric circles because if a line is tangent to one circle, it would only intersect teh other 
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Ganezh [65]

Answer:

1. true

2. False

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Step-by-step explanation:

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3 years ago
Costs for standard veterinary services at a local animal hospital follow a Normal distribution with a mean of $72 and a standard
Romashka [77]

Answer:

P(32

And we can find this probability with this difference:

P(-1.905

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(-1.905

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the costs of services of a population, and for this case we know the distribution for X is given by:

X \sim N(72,21)  

Where \mu=72 and \sigma=21

We are interested on this probability

P(32

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(32

And we can find this probability with this difference:

P(-1.905

And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.  

P(-1.905

8 0
3 years ago
Which of the following is used in the metric system to measure plots of land, such as a farmer's field, just as the acre is used
Eduardwww [97]
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Find the distance between the two points rounding to the nearest tenth (if necessary).
kumpel [21]

Answer:

8.49

Step-by-step explanation:

Posted in the image due to lack of proper format.

3 0
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