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Brut [27]
3 years ago
8

Which ordered pair (a, b) is the solution to the following system of equations?

Mathematics
1 answer:
Kamila [148]3 years ago
8 0

Answer:

  (-13, -4)

Step-by-step explanation:

It is about as easy to try the solutions as it is to find them from scratch.

__

However, we can determine which one it is by adding twice the second equation to the first.

  (-2a +3b) +2(a -4b) = (14) +2(3)

  -5b = 20

  b = -4 . . . . . . matches the first choice

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Evaluate the variable expression x + y for the given values of x and y. x = 38,221; y = 51,671
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Answer:

89,892

Step-by-step explanation:

x+y

(38,221)+(51,671)

89,892

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Explain what it means when elimintion results in an equation that is always true
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The soda was $1.00.


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Which is the solution for the system of linear equations below?<br><br> y= -1/3x + 3<br> y = -x + 1
tamaranim1 [39]

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not sure if this is what your looking for tho

Step-by-step explanation:

7 0
3 years ago
A group of students goes out to lunch. If two have burritos and five have tacos, the bill will be $19.50. If five students have
nikklg [1K]

Answer:

The price of the burrito is $3.5 and the price of the taco is $2.5.

Step-by-step explanation:

2x+5y=19.5

5x+2y=22.5

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

5(2x+5y)=5(19.5)

-2(5x+2y)=-2(22.5)

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

10x+25y=97.5

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The price of the burrito is $3.5 and the price of the taco is $2.5.

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