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jarptica [38.1K]
3 years ago
11

The town library is raising money by selling old books for $2 each.Which equation can be used to find the amount of money raised

if the number of books sold is known?Let x represent the number of books sold and y represent the amount of money raised.
Mathematics
2 answers:
Oxana [17]3 years ago
6 0

Answer:

y=2x

Step-by-step explanation:

y is the amount of money made from the sold books

x is the number of books that are sold

since every book is sold for 2 dollars it's 2x,

so that mean x is multiplied by 2 to get y

alexgriva [62]3 years ago
5 0
Y=2x
y is the amount of money made from the sold books
x is the number of books that are sold (it is x because you don't know how many will be sold, so you have to account for all possibilities)
2x is because every book is sold for 2 dollars, so that mean x is multiplied by 2 to get y
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Valentin [98]

Answer:

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Step-by-step explanation:

In order to find the answer to this question you need to remember that if the denominator and the numerator are the same they equal one or one whole.

\frac{2}{2} =1

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As long as the numerator and the denominator are the same they will be equivalent to 2/2 and 3/3.

Hope this helps.

3 0
3 years ago
To the nearest tenth, what is the value of P(C|Y)? 0.4 0.5 0.7 0.8
erica [24]

Answer:

P(C|Y) = 0.5.

Step-by-step explanation:

We are given the following table below;

               X             Y               Z             Total

A             32           10             28              70

B              6             5              25              36

C             18            15              7                40

Total       56           30            60              146

Now, we have to find the probability of P(C/Y).

As we know that the conditional probability formula of P(A/B) is given by;

                    P(A/B) =  \frac{P(A \bigcap B)}{P(B)}

So, according to our question;

P(C/Y) =  \frac{P(C \bigcap Y)}{P(Y)}

Here, P(Y) = \frac{30}{146} and P(C \bigcap Y) =  \frac{15}{146}  {by seeing third row and second column}

               

Hence, P(C/Y) =  \frac{\frac{15}{146} }{\frac{30}{146} }

                       =  \frac{15}{30}  = <u>0.5.</u>

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Step-by-step explanation:

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