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Kitty [74]
3 years ago
15

Consider the following system of equations.

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
8 0

Answer:

  • A. Since 11 ≠ 9, there is no solution

Step-by-step explanation:

<u>Given system:</u>

  • 1.75x + 1.25y = 2.75
  • 7x + 5y = 9

<u>Multiply the first equation by 4:</u>

  • 4(1.75)x + 4(1.25)y = 4(2.75)
  • 7x + 5y = 11

We get same equation as the second one with the difference that the right side equals to 11.

Since left sides are same and right sides are different, the system has no solution.

Correct choice is A

Anit [1.1K]3 years ago
4 0

Step-by-step explanation:

1.75x + 1.25y = 2.75 (1)

7x + 5y = 9 (2)

On multiplying EQ. 1 by 4

4(1.75x + 1.25y) = 4(2.75)

7x + 5y = 11 (3)

We get the same LHS as equation 2 but not same RHS as equation 2

Option A is correct

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Alenkasestr [34]

Answer:

The answer is 602/45

Step-by-step explanation:

Since this involves subtracting fraction, we must make sure each denominator  is alike, which involves find the LCD (least common denominator).

9, 5, and 1 (the number 14's denominator is 1) all have the LCD 45 in common.

Multiply 9 by 5, which multiplies 2 with 5, giving 10.

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