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AURORKA [14]
3 years ago
13

three times a number plus three times a second number is fifteen. Four times the first plus twice the second number is fourteen.

Find the numbers.
Mathematics
1 answer:
garri49 [273]3 years ago
7 0

9514 1404 393

Answer:

  2 and 3

Step-by-step explanation:

Let x and y represent the first and second numbers, respectively.

  3x +3y = 15

  4x +2y = 14

Dividing the equations by common factors, we can rewrite them to standard form:

  x + y = 5

  2x + y = 7

Subtracting the first equation from the second gives ...

  (2x +y) -(x +y) = (7) -(5)

  x = 2

Using either equation to find y, we have also ...

  y = 3

The two numbers are 2 and 3.

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4 years ago
Find two consecutive odd integers such that seven times the first equals five times the second.
fredd [130]

Answer:

Odd integers are always one more that an even integer:

1st: 2n+1

2nd: 2n+3

Step-by-step explanation:

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

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8 0
3 years ago
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DerKrebs [107]

Answer:

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The recursive formula is as follow

Step-by-step explanation:

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For the first 5 values we just replace the value of n with 1, 2, 3, 4 and 5 and calculate the answer

The first five values are 12, 14, 16, 18 and 20

A recursive formula is one that

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Since we know the first term is 12, i.e  and we know that the difference between consecutive terms is 2 we can conclude that the recursive formula is made up of the following two formulas

The over all formula is as follow

Step-by-step explanation:

Hope this helps:)

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3 years ago
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