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Nadusha1986 [10]
2 years ago
15

Solve the system of equations. 2.5y + 3x = 27 5x – 2.5y = 5 What equation is the result of adding the two equations? What is the

solution to the system?
Mathematics
2 answers:
raketka [301]2 years ago
6 0

Answer: The resultof adding the two equations is 3x= 32.  

The solution to the system is ( 4; 6).

Step-by-step explanation:

Hi, first we add the two equations.

2.5y + 3x =27

+

-2.5y +5x   = 5

----------------------

8x= 32

The resultof adding the two equations is 3x= 32

the next step is solving the equation:

8x= 32

x=32/8

x= 4

Substituting the value of x in any of the original equations:

2.5y +3x= 27

2.5y +3(4) =27

2.5y +12=27

2.5y  = 27-12

2.5y = 15

y= 15/2.5

y=6

So, the solution to the system is ( 4; 6)

Feel free to ask for more if it´s necessary or if you did not understand something.

Nitella [24]2 years ago
5 0

Answer:

The solution to this system is (4, 1/6).

Step-by-step explanation:

Please separate these two equations for clarity.  I like to write them in column format:

2.5y + 3x = 27

5x – 2.5y = 5

---------------------

8x           = 32, and x = 4.

Subbing 4 for x in the second equation yields 5(4) - 2.5y = 5.

Then 20 - 2.5y = 5, or 15 = 2.5y.  Solving for y, we get y = 1/6.

The solution to this system is thus (4, 1/6).

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mr Goodwill [35]

Answer:

The answer is 5300 units.

Step-by-step explanation:

The equation will be exactly lie below if the price is 5$:

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Roots of the parabol will be:

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3 years ago
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Step-by-step explanation:

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2 years ago
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Vaselesa [24]

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Step-by-step explanation:

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We then multiply 2 raise to power 8 by the power of 3/4. We will then be left with 2 raise to power 6.

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Check the attached file for proper explanation.

7 0
3 years ago
9 What dimensions do we need a rectangular
wlad13 [49]

Answer:

W=30m L=90m

Step-by-step explanation:

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we know that area of a rectangle is A=L*W so we sustitute what we know

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3 0
3 years ago
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BaLLatris [955]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
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