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Nataliya [291]
2 years ago
13

Solve the system of equations: x + y + z = 5; x - y + 3z = 9; and z = 6. PLS PLS HELP ME

Mathematics
1 answer:
Sonja [21]2 years ago
7 0
X + y + 6 = 5
x - y + 18 = 9

2x + 24 = 14 minus 24
2x = -10 divided by 2
x = -5

-5 + y + 6 = 5
y = 4
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7 x 3/4 in simplest form
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If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g – f)(3)?
tatiyna
F(x) = 4 - x²    g(x) = 6x

(g - f)(x) = g(x) - f(x)

(g - f)(3) = g(3) - f(3)

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g(3) = 6*3 = 18

f(x) = 4 - x²

f(3) = 4 - 3² = 4 - 9 = -5

(g - f)(3) = g(3) - f(3) = 18 - (-5) = 18 + 5 = 23

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Step-by-step explanation:


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