Mathematics, 25.12.2019 20:31 wesfleridor

The system of equations is solved using the linear combination method.

what does 0 = −12 mean regarding the solution to the system?

there are no solutions to the system because the equations represent parallel lines.
there are no solutions to the system because the equations represent the same line.
there are infinitely many solutions to the system because the equations represent parallel lines.
there are infinitely many solutions to the system because the equations represent the same line.

The system of equations is solved using the linear combination method. what

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Answer from: hewonabi123

The correct answer is:

There are no solutions to the system because the equations represent parallel lines.

Explanation:

When solving a system of equations using linear combination, if we get two numbers that are not equal as our solution, then the system of equations has no solution. This would indicate that the lines are parallel because they do not intersect.

Answer from: debry

No solution because the lines are parallel

little tip :
* if the set of equations results in 0 = 4, or 3 = 2, or something not equal, then the lines have no solution and are parallel.
* if the set of equations results in 0 = 0, or 5 = 5, or something equal, then the lines are the same and will have infinite solutions.
* if the set of equations results in y = 7, or x = 4, or a variable equaling a number, then there will only be one solution

Answer from: Quest

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where, $a = \frac{\sum y \sum x^2 - \sum x\sum xy}{n\sum x^2 - (\sum x)^2}$

here given table is,

price ($), x : 18 23 25 29 30 33

pairs sold, y : 16 13 10 8 6 2

so, $\sum x = 158$ , $\sum y = 55$ , $\sum xy = 1315$ ,

$\sum x^2 = 4308$ and $\sum y^2 = 629$ ,

thus, slop of the given line is,

$a = \frac{55\times 4308-158\times 1315}{6\times 4308-(158)^2}$

⇒ $a = \frac{29170}{884}$

⇒ $a =32.9977375566$ ≈ 33

Answer from: Quest

the above table 1 will calculate the population size (n) after a certain length of time (t). all you need to do is plug in the initial population number (no), the growth rate (r) and the length of time (t). the constant (e) is already entered into the equation. it stands for the base of the natural logarithms (approximately 2.71828). growth rate (r) and time (t) must be expressed in the same unit of time, such as years, days, hours or minutes. for humans, population growth rate is based on one year. if a population of people grew from 1000 to 1040 in one year, then the percent increase or annual growth rate is 40/1000 x 100 = 4 percent.

step-by-step explanation:

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The system of equations is solved using the linear combination method.

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