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viva [34]
2 years ago
9

Solve the system of equations. 2x + 7y = 3 x= -4y

Mathematics
1 answer:
I am Lyosha [343]2 years ago
5 0

Answer:

(12, -3)

Step-by-step explanation:

You can solve it algebraically or graphically. Graphically you find the intersection point. Algebraically with substitution/elimination.

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Which equation represents a line which is perpendicular to the line 2x + y = -5?
Gnesinka [82]

Step-by-step explanation:

Given expression;

   2x + y  = -5;

  The given equation must be written in a form where the slope is the negative inverse of the given one.

A line perpendicular to another will have a negative inverse slope.

   2x + y  = -5

  Equation of a straight line is generally written as;

       y  = mx + c

y and x are the coordinates

m is the slope

c is y - intercept

          2x + y  = -5

                 y  = -2x -5

 The slope of the perpendicular = \frac{1}{2}

So,

the new line;

            y  =  \frac{1}{2}x  -5

Any line with slope of  \frac{1}{2} will be perpendicular

7 0
3 years ago
which of the following is a polynomial expression a. 2^x + x + 3 b. x^2 + 2x + 7 or c. 1/x + 1/x2 + 1/x3 ( btw the ^2 means it’s
NeTakaya

(b)

A polynomial has the form

a_{0}x^{n} ± a_{1}x^{n-1} + ....

the only expression fitting this description is : x² + 2x + 7


5 0
3 years ago
Please help me find the y intercept for the table! picture is below
swat32

Answer:

a

(Graph shows variables conducted) - shows that 1 ,2, 5, 8, 11 - odd<

5 0
3 years ago
Read 2 more answers
I need help with question in photo
Rufina [12.5K]

Answer:

14

Step-by-step explanation:

{x}^{2}  =  {4}^{2}  \\  = 16\\ 4y = 4 \times  - 3 \\ 4 \times  - 3 =  - 12 \\  16 -  - 12 =16 + 12  \\  -  \times  -  =  +  \\ 16 + 12 = 28 \\ 28 \div 2 = 14

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What is compression
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the action of compressing or being compressed.

the reduction in volume (causing an increase in pressure) of the fuel mixture in an internal combustion engine before ignition.

Step-by-step explanation:

corona is real

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