Mathematics, 04.02.2020 00:48 jmeza502506

5. give an example of an open equation. 6. how can you use an equation to make a prediction from a pattern? 7. pizza costs 1.50 per slice. use a table an equation to represent the relationship between the number of slices of pizza bought and the total cost.

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5. An example would be x+4 = 8

6. Using equations, you will are able to predict data from a specific value of independent variable. You can see how does the independent variable affect the dependent variable.

7. The y is the cost of the pizza when you buy x slices at 1.50 per slice. So the equation in y = mx + b form is y = 1.5x

Answer from: juanitarodriguez

5. An open equation is an equation with one or more variables that may be true or false depending on the values of the variables. An example of and open equation is 4x+3=7 .

- Notice that if x=1 , then

4x+3=7

4(1)+3=7

7=7

As you can see, when x=1 , the open equation 4x+3=7 is true.

- Let's check what happen if x=3 :

4x+3=7

4(3)+3=7

12+3=7

$15\neq 7$

Since 15 is not equal to seven, when x=3 , the open equation 4x+3=7 is false.

6. Equations can be used as models to represent how a particular part of the real world works. Since model equations use variables to relate real world quantities, you can use equations to make predictions. For instance, suppose you have the equation y=0.50x

where is the total cost (in dollars) for parking for hours.

You can predict, using the equation, how much we are going to pay for 2 hours of parking.

y=0.50x

y=0.50(2)

y=1.00

Using an equation, we predicted that parking 2 hours will cost $1.

7. Let be the total cost of the pizza, and let be the number of slices. We know from our problem that one slice costs 1.50, so x slices will cost 1.50x . Now the only thing left is relate the total cost and the cost of x slices 1.50x using an equal sign to create and equation to model the situation:

y=1.50x

Notice that we can predict how much is going to cost a pizza of 8 slices just by replacing with 8 in our pizza equation

y=1.50x

y=1.50(8)

y=12

Answer from: Quest

i think it would be 43 movies that would have to be watched.

step-by-step explanation:

think about it. for the second plan, every month is 8 dollars. 8 x 12= 96. so thats the number for the second plan. now for the first plan, its annual meaning you have to pay 10 dollars every year. so now you have to get an equivalent amount of 86 since 96-10=86. 86 divided by 2 since every movie costs 2$ then you would have to watch 43 movies a year to get the same as the second plan. i really hoped this . have a wonderful day as well!

Answer from: Quest

question

what is the value of the third quartile of the data set represented by this box plot? a. 19 b. 21 c. 26 d. 29

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