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2 years ago

How many solutions does 9x+5=9x+7

Mathematics

2 answers:

zhenek [66]2 years ago

8 0

Answer:

Step-by-step explanation:

If we try to solve this question, we get no solutions:

First we subtract 5 from both sides :

9x = 9x + 2

Now we subtract 9x from both sides :

0 = 0 +2

0 = 2 ❌

This is why this equation has no solutions

Hope this helped and have a good day

Troyanec [42]2 years ago

3 0

Answer:

There are 0 solutions to this problem because it cannot be re-arranged logically enough to come to a new conclusion.

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago

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3 years ago

Suppose a certain species of fawns between 1 and 5 months old have a body weight that is approximately normally distributed with

Crank

Answer:

$P(X$

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:

$P(X$

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

$X \sim N(26,4.2)$