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24 October, 01:01

Solve this system of equations algebraically:

y + x = 19 - x2

x + y = 80

1. Isolate one variable in the system of equations. y = - x2 - x + 19

y = - x + 80

2. Use substitution to create a one-variable equation. - x + 80 = - x2 - x + 19

3. Solve to determine the unknown variable in the equation.

The system has

real number solution (s).

+5
Answers (1)
  1. 24 October, 01:12
    0
    I'm guessing the blank after has is what the number of real number solutions there are. Your answer would be 0.
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