Let number of books by astrid's = x
Out of x , 84% are fiction.
So, Number of non fictional books = x - 
= 
→Ratio of number of books to fictional books
⇒[Dividing numerator and denominator by 4.]
→Out of 25 books by astrid 21 are fictional.
→ Number of fictional books by astrid = 
So if the image is supposed to be the dishcloth, then the area would be B) 441 cm2
The deck would be 30 * 22 = C) 660 ft2
An example of a parallelogram with congruent diagonals is a square.
Hope this helps =)
Using the normal distribution, it is found that the two readings that are cutoff values separating the rejected thermometers from the others are -1.96ºC and 1.96ºC.
<h3>Normal Probability Distribution</h3>
The z-score of a measure X of a normally distributed variable with mean
and standard deviation
is given by:

- The z-score measures how many standard deviations the measure is above or below the mean.
- Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.
The mean and the standard deviation are given, respectively, by:
.
The z-score that cuts off the bottom and top 2.5% of the distribution is
, hence:


X = -1.96


X = 1.96
The two readings that are cutoff values separating the rejected thermometers from the others are -1.96ºC and 1.96ºC.
More can be learned about the normal distribution at brainly.com/question/27879230
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120 - 80 (Futbol) - 20 (voley) = 20 - 10 (Futbol y Voley) = 10
10 Personas mas juegan Voley
Pero si estas diciendo Cuantos Juegan Voley en total, eso sera
30 Personas