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DaniilM [7]
3 years ago
7

Simplify 4a + 5b – 3b + a

Mathematics
1 answer:
kondaur [170]3 years ago
4 0
Answer - 8b + 5a
The answer to the question ^^^
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Consider circle C with diameter DE. The equation of circle C is ()2 + ()2 = .
Ne4ueva [31]

Answer:

The equation of circle C is ( x-5 )2 + ( y-7 )2 = 80 .

Step-by-step explanation:

7 0
3 years ago
Determine if the expression 464 +c+ cº is a polynomial or not. If it is a polynomial,
Makovka662 [10]

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I wish I could help but I'm not sure

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A researcher is interested in the lengths of brook trout, which are known to be approximately Normally distributed with mean 80
aliya0001 [1]

Answer:

P(X

And we can find this probability with the normal standard distirbution or excel and we got:

P(z

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 lenghts of a population, and for this case we know the distribution for X is given by:

X \sim N(80,5)  

Where \mu=80 and \sigma=5

We are interested on this probability

P(X

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(X

And we can find this probability with the normal standard distirbution or excel and we got:

P(z

6 0
3 years ago
I need help with this
MrRissso [65]

Answer:

Step-by-step explanation:

1/2

4 0
3 years ago
B) How many terms are there<br>S.a) Find the value of x:<br>3 15<br>5 2x<br>3<br>5​
Allisa [31]

Answer:

??/

Step-by-step explanation:

???

4 0
3 years ago
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