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SVETLANKA909090 [29]
3 years ago
8

Solve the simultaneous equations5x + y = 113x - y = 9​

Mathematics
2 answers:
bagirrra123 [75]3 years ago
8 0

Answer:

Step-by-step explanation:

5x  + y = 11 -------------------(I)

3x - y = 9 -----------------(II)

Add equation (I) & (II)

   5x + y = 11

   <u>3x - y = 9</u>        {add and y will be eliminated and we'll get the value of x}

  8x       = 20

          x = 20/8

         x = 2.5

Plugin x = 2.5 in equation (I)

5*2.5 + y = 11

 12.5  + y = 11

            y = 11 - 12.5

            y = -1.5

Andreyy893 years ago
3 0

Answer:

1) x = 2.5

2) y = -1.5

Step-by-step explanation:

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3 years ago
Write 7:30 in two ways pertaining to time
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4 years ago
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Eddi Din [679]

Answer:

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Step-by-step explanation:

Assuming this is a right triangle with hypotenuse = c and legs a and b

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aivan3 [116]
If you would like to know what is 5% of 225, you can calculate this using the following steps:

x = 5% of 225
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Result: 5% of 225 is 11.25.
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