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Burka [1]
3 years ago
7

solve the following system of equations.express your answer as an ordered pair in the format (a,b) with no spaces the number or

symbols 2x+5y=16 -5x-2y=2
Mathematics
1 answer:
NeTakaya3 years ago
5 0

Answer:

The solution is (-2,4)

Step-by-step explanation:

We'll solve the system

2x+5y=16

-5x-2y=2

using elimination by addition and subtraction.

Let's eliminate x first.  To do this, multiply the first equation by 5 and multiply the second equation by 2.  We get:

10x + 25y = 80

-10x  -  4y   = 4

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

          21y = 84.  Thus, y = 84/21 = 4.

Subbing 4 for y in the second equation, we get

-5x -2(4) = 2, or

   -8 - 2 = 5x, or

     -10  = 5x.  Thus, x = -10/5 = -2.

The solution is (-2,4)

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Answer:

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Step-by-step explanation:

Given data

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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4 years ago
A small toy company makes only cars and trucks. The profit made on cars is $2 each and the profit made on trucks is $3 each. To
pishuonlain [190]
A toy company needs to profit at least $500 from selling cars and trucks. A car can make a profit $2 while the truck can $3 profit.
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Answer:

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Step-by-step explanation:

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