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Eva8 [605]
2 years ago
15

Que es un variable? (De matemáticas)

Mathematics
1 answer:
dsp732 years ago
6 0

Answer:

\huge\boxed{Que \ es \ un \  variable \ ?\hookleftarrow}

✐ En matemáticas, una variable es un símbolo que funciona como marcador de posición para expresiones o cantidades que pueden variar o cambiar; se utiliza a menudo para representar el argumento de una función o un elemento arbitrario de un conjunto. Además de los números, las variables se utilizan comúnmente para representar vectores, matrices y funciones.

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In November mr lees students read 50 books in December they read 40 books what is the percent increase or decrease in the number
raketka [301]

10% decrease is the answer bb :)

7 0
3 years ago
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Eric's chocolate bar is 56% cocoa. If the weight of the chocolate bar is 78 grams, how many grams of cocoa does it contain? Roun
alexgriva [62]

Answer:

The answer to your question is 43.7 g of chocolate

Step-by-step explanation:

Data

56% cocoa

mass of a chocolate bar = 78 g

Process

To solve this problem, use proportions and cross multiplication, consider the mass of the bar is 100%.

                          78 g of chocolate ------------------- 100%

                             x                          ------------------    56%

                                            x = (56 x 78) / 100

                                            x = 4368/100

                                            x = 43.68 g

-Round to the nearest tenth

             Mass of the chocolate = 43.7 g

8 0
3 years ago
What is 5.293 rounded to the nearest hundredth
fredd [130]

Answer:

5.29

Step-by-step explanation:

8 0
3 years ago
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Help please 23 points will make brainliest
svlad2 [7]
It should be 78.54.
Double check that. 
Formula: V=πr2h/3
r2 is R squared 
8 0
3 years ago
A bag contains only black marbles and white marbles . Ezra reached into the bag without looking , got 30 marbles , and found tha
Keith_Richards [23]
2/5

Since 12 out of 30 marbles were black, you can assume that the percentage of black marbles in the bag is 40% (Ex: 12/30=.4) The probability that the marble you pick is black is equal to the percentage of black marbles in the bag. 40% is equal to 2/5.
6 0
2 years ago
Read 2 more answers
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