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polet [3.4K]
2 years ago
7

Whats the missing number

Mathematics
1 answer:
Anuta_ua [19.1K]2 years ago
4 0

Answer:

<h2><u><em>5</em></u></h2>

Step-by-step explanation:

X * 3^2 +2 = 47

X * 9 + 2 = 47

9X = 47 - 2

9x = 45

x = 45 : 9

X = 5

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When a dummy variable is included in a regression model that has one numerical independent variable, what assumption do you need
sukhopar [10]

Answer:

Step-by-step explanation:

You need to assume that the slope between the dependent Varian and the numerical independent variable is zero.

In regression analysis, to find the effect of one independent variable on the dependent variable, there has to be no interference from the other independent variables whether they be categorical (dummy) or numerical independent variables.

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When a dummy independent variable is included in a regression model, to know the effect of that dummy or category (e.g. day =1, night =0) on the dependent variable, the influence of the numerical independent variable has to be removed temporarily.

In a regression equation,

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a is the intercept on the vertical axis on the graph

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3 0
2 years ago
Diego measured the length of a pen to be 22 cm. The actual length of the pen is 23 cm. Which of the following is closest to the
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Step-by-step explanation:

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3 0
2 years ago
HELP ASAP
almond37 [142]

Answer:

Step-by-step explanation:

let the number of dimes=x

and number of quarters=y

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(4x the answer ) can you help with my question

Step-by-step explanation:

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