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nignag [31]
3 years ago
6

0.9x + 2.3x = -6.4I don't understand this lol​

Mathematics
2 answers:
faltersainse [42]3 years ago
5 0

Answer: Solving for x

Step-by-step explanation:

First add the known variables. This gets you 3.2

Next, since you know that multiplication is used to find 6.4 we take the inverse. 6.4/3.2

To get 2.

And finally, check you work.Fill in the x value and substitute for x. .9(2) + 2.3(2) to make sure your division is correct.

Hope this helps!!

marissa [1.9K]3 years ago
3 0

Answer:

-2

Step-by-step explanation:

0.9x + 2.3x = -6.4

3.2x = -6.4

x = -2

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  • Change in weight per day of hibernation = - 0.03
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A linear model can be created using the data in the table given using a regression calculator or excel ;

The linear model obtained in the form y = m + bx is :

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  • The slope value of the function gives the change in weight value per number of days of hibernation ; which is -0.03.

  • Using the regression equation, substitute, the vlaue of x = 115
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Therefore, the change in weight after 115 days of hibernation is - 3.45 ounces.

Learn more :brainly.com/question/18405415

8 0
2 years ago
20. The perimeter of a square is 72 in. What is its area?
ivanzaharov [21]

The formula for perimeter is length + length + width + width

You know that all the sides of a square are equal to each other. That means that all the values in the perimeter formula should be the same. Therefore you can divide 72 by 4 (perimeter divided by the number of sides)

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