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creativ13 [48]
2 years ago
9

The table compares the number of songs and the number of videos Ruby's friends keep on their mobile phones.

Mathematics
1 answer:
Mnenie [13.5K]2 years ago
3 0

A function assigns the values. The table can be represented by a function.

<h3>What is a Function?</h3>

A function assigns the value of each element of one set to the other specific element of another set.

No, the number of videos kept on Ruby's friends' phones cannot be expressed as a function of the number of songs. A function produces a distinct result for each input. When the input is 125, we get two distinct results. As a result, the table does not represent a function.

Hence, the table can be represented by a function.

Learn more about Function:

brainly.com/question/5245372

#SPJ1

You might be interested in
This set of ordered pairs shows a relationship between x and y. {(0, -2), (3, 7), (6, 16), (6, 15), (8, 21), (10, 28), (11,31)}
Hunter-Best [27]

Answer:

The closest to the output when the input is approximately 12

Step-by-step explanation:

The given (x, y) coordinates are;

The line of best fit is

x, 0, 3, 6, 6, 8, 10, 11

y, -2, 7, 16, 15, 21, 28, 31

The line of best fit can be obtained from the scatter plot of the given data from where a linear pattern is apparent

A linear line of best fit is a trend line that gives an overall cumulative minimum distance of all the points from the line

The method for constructing a line of best fit includes;

1) The least Squares Method

2) The method of linear regression

3) Construction of line of best fit

a) The area method

b) The dividing method

The least squares equation is given as follows;

\hat y = a + b·x

b = \dfrac{\Sigma (x_i - \overline x) \cdot (y_i - \overline y)}{\Sigma (x_i - \overline x)^2 }

From MS Excel, we have;

{\Sigma (x_i - \overline x) \cdot (y_i - \overline y)}{ } = 266.8571

{\Sigma (x_i - \overline x)^2 } = 89.42857

∴ b = 266.8571/89.42857 ≈ 2.984

a =\overline y- b \cdot \overline x

From MS Excel, with the given data, we get;

\overline y = 16.57143

\overline x = 6.285714

Therefore;

a = 16.57143 - 2.984 × 6.285714 = -2.185

Therefore, we get the following regression equation;

\hat y = -2.185 + 2.9·x

Where;

x = The input

\hat y = The output

Therefore, when x = 5, we get;

\hat y = -2.185 + 2.9 × 5 = 12.315

Therefore, the closest to the output when the input is 5, y ≈ 12

8 0
2 years ago
3
Irina18 [472]

Answer:

bussin

Step-by-step explanation:

bbbbbbuuuuuussssssssssssiiiiiinnnnnn

5 0
2 years ago
60 + $50.45 x equals $57 .95 cents x
Zina [86]

Answer:

x = 8

Step-by-step explanation:

The first step would be to move all terms with x to one side of the equation:

60 + 50.45x = 57.95x --> 60 + 50.45x - 50.45x = 57.95x - 50.45x -->

60 = 7.50x

The last step to obtain x is to divide both sides by the coefficient of (number next to) x:

60/7.50 = 7.50x/7.50 --> 8 = x

3 0
2 years ago
Please answer eeeeeeeeeeeeeeeeeeeva
faltersainse [42]

Answer:

35 students

Step-by-step explanation:

Find 25% of 500:

  1. \frac{25}{100} × \frac{500}{1} = \frac{12500}{100}  
  2. \frac{12500}{100} = \frac{125}{1} = 125  

Find 18% of 500:

  1. \frac{18}{100} × \frac{500}{1} = \frac{9000}{100}  
  2. \frac{9000}{100} = \frac{90}{1} = 90  

Find the difference:

  1. 125 - 90 = 35

So, 35 more students prefer video games to bike riding.

I hope this helps!

7 0
3 years ago
9x -7 = -7 show your work
Irina-Kira [14]
9x-7=-7
     +7 +7
___________
9x= 0
_     _
9     9
x=0
5 0
3 years ago
Read 2 more answers
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