What is the constant of proportionality what does it mean

Mathematics

1 answer:

Alexandra [31]3 years ago

6 0

Answer:

The constant of proportionality is the ratio between numbers that expresses the rate at which the numbers increase or decrease. These two numbers are directly proportional when they increase and decrease at the same rate.

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Macroeconomics is the study of the economy as a whole. A macroeconomic variable is one that measures a characteristic of the who

Svet_ta [14]

Answer:

Check the explanation

Step-by-step explanation:

The multiple coefficient of determination, denoted R2, is the ratio of the sum of squares due to regression to the total sum of squares.

The R2 for the new regression is 63209/121222=0.52 (A), indicating that the new estimated multiple regression equation explains 52% (B) of the variability of digital camera sales.

The sum of squares due to error divided by the total sum of squares is 58013/121222=0.4785=0.48 (B), and 1 minus this ratio is 1-0.48=0.52 (B).

The adjusted multiple coefficient of determination, denoted by R2a, for the new regression is 1-[(1-r^2)(n-1/n-k-1)]=0.45 (C).

The mean square due to error divided by the total mean square is 2072/3788=0.5469=0.55 (A) , and 1 minus this ratio is 1-0.55=0.45 (C).

In general, adding independent variables to a multiple regression model reduces the sum of squares due to error (C). The multiple coefficient of determination increases (C), and the adjusted multiple coefficient of determination could either increase or decrease (C).

Adding the independent variable x4 to the multiple regression model increases (B) the multiple coefficient of determination and increases (A) the adjusted multiple coefficient of determination.

6 0

3 years ago

1) Select the characteristics that are true of all parallelograms. Group of answer choices Opposite sides are never equal. Oppos

drek231 [11]

Answer:

- Opposite angles are congruent (equal).

- Parallelograms have 4 sides

- Opposites sides are parallel and equal in length.

Step-by-step explanation:

A parallelogram is a quadrilateral and since quadrilaterals are fur sided figures, hence parallelograms are also four sided figures.

A parallelogram has its opposite side equal and parallel to each other with a slanting edge at two of its sides. Since its opposite sides are equal hence its opposite angles are also equal.

Parallelogram cannot have more than four sides because they are quadrilateral. Find the diagram of a parallelogram in the attached figure.

It can be seen from the attached figure that AB//CD and AD//BC