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Vsevolod [243]
3 years ago
13

3/5p-4=25 plz... help me

Mathematics
1 answer:
Soloha48 [4]3 years ago
4 0
\frac{3}{5} p - 4 = 25

First, simplify \frac{3}{5} p to \frac{3p}{5} / Your problem should look like: \frac{3p}{5} - 4 = 25
Second, multiply both sides by 5. / Your problem should look like: 3p - 20 = 125
Third, add 20 to both sides. / Your problem should look like: 3p = 125 + 20
Fourth, simplify 125 + 20 to get 145. / Your problem should look like: 3p = 145 
Fifth, divide both sides by 3. / Your problem should look like: p = \frac{145}{3}

Answer as fraction: p = \frac{145}{3} 
Answer as decimal: 48.3333

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Step-by-step explanation:

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A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 614 babies bo
MissTica

Answer:

The number of newborns who weighed between 1614 grams and 5182 grams was of 586.

Step-by-step explanation:

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

The mean weight was 3398 grams with a standard deviation of 892 grams.

This means that \mu = 3398, \sigma = 892

Proportion that weighed between 1614 and 5182 grams:

p-value of Z when X = 5182 subtracted by the p-value of Z when X = 1614.

X = 5182

Z = \frac{X - \mu}{\sigma}

Z = \frac{5182 - 3398}{892}

Z = 2

Z = 2 has a p-value of 0.9772

X = 1614

Z = \frac{X - \mu}{\sigma}

Z = \frac{1614 - 3398}{892}

Z = -2

Z = -2 has a p-value of 0.0228

0.9772 - 0.0228 = 0.9544.

Out of 614 babies:

0.9544*614 = 586

The number of newborns who weighed between 1614 grams and 5182 grams was of 586.

4 0
3 years ago
What is the answer to this question and how do I get the answer
Svetlanka [38]
I think it is something

7 0
4 years ago
Can someone help me with this question?
NikAS [45]
D is correct. Hope this helped.
4 0
3 years ago
Read 2 more answers
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