Solve the equation 6(z + 8.5) = 123
2 answers:
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Answer:
( f + g ) (x) =
g(x) - f(x) =
Step-by-step explanation:
- f(x) = 4 x - 4 and g(x) =
( f + g ) (x) = f(x) + g(x)
=
=
2. g(x) = and f(x) = 2 x + 5
g(x) - f(x) =
=
=
Answer:
C and D
Step-by-step explanation:
To determine which pairs are solutions, substitute the coordinates into the left side of the equation and if equal to the right side then they are solutions.
(7, - 2)
2(7) + 10(- 2) = 14 - 20 = - 6 ≠ 12 → (7, - 2) is not a solution
(- 5, - 4)
2(- 5) + 10(- 4) = - 10 - 40 = - 50 ≠ 12 → (- 5, - 4) is not a solution
(4, )
2(4) + 10() = 8 + 4 = 12 → hence solution
(- 5, )
2(- 5) + 10( ) = - 10 + 22 = 12 → hence solution