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2 years ago

Find the sum of the series.

Mathematics

2 answers:

ch4aika [34]2 years ago

6 0

Answer:

as per my point to view you can use a L.C.M so you can get the answer or you can try using a exponent way like 5by 1 as n value is 1 so it may give yoh answer

valentina_108 [34]2 years ago

5 0

Answer:

1/12

Step-by-step explanation:

firstly the answer will not be -,because 5^(-n)>7^(-n)

then we try the value for first 2:(2/35)+(24/1225)=94/1225

then we can know for n=<3 the value outcome is too small

and 12×94/1225=1128/1225 and the value is nearly 1/12 and that is the answer.

or need limits to do

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3 years ago

Janice thinks that 20 hundreths is equivalent to 2 thousands because 20 hundreths is equal to 2 thousands. use words and a place

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3 years ago

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3 years ago

Given the following diagram, what is the value for x?<br> A) 1<br> B) 9<br> C) 18√2<br> D) 18√3

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Step-by-step explanation:

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2 years ago

What is the z-score of a newborn who weighs 4,000 g?.

vagabundo [1.1K]

The z-score of the considered newborn having 4,000 g weight is $\dfrac{4000 - \mu}{\sigma}$

<h3>How to get the z scores?</h3>

If we've got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z score.

If we have

$X \sim N(\mu, \sigma)$

(X is following normal distribution with mean $\mu$ and standard deviation $\sigma$ )

then it can be converted to standard normal distribution as

$Z = \dfrac{X - \mu}{\sigma}, \\\\Z \sim N(0,1)$

(Know the fact that in continuous distribution, probability of a single point is 0, so we can write

$P(Z \leq z) = P(Z < z) )$

Also, know that if we look for Z = z in z tables, the p value we get is

$P(Z \leq z) = \rm p \: value$

For the considered case, the statement in the problem is missing the mean weight of the newborn and standard deviation of the data set of weights of newborn.

Thus, for them, we can consider variables in place of their actual values.

Let we have:

X = weights of newborns for some considered system (in grams)
$\mu$ = mean weight of newborns (in grams)
$\sigma$ = standard deviation of the data set of weights of newborns

Then, the z-score for X = 4000 is

$z = \dfrac{x - \mu}{\sigma} = \dfrac{4000 - \mu}{\sigma}$

Thus, the z-score of the considered newborn having 4,000 g weight is $\dfrac{4000 - \mu}{\sigma}$

Learn more about z-scores here:

brainly.com/question/13299273

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2 years ago