Evaluate the function f(x)=2x-2 when x equals negative 1 A. -4 B. -3 C. 0 D. 4

1 answer:

8 0

F(x)= -4.
Just plug in -1 for your x in 2x-2 and solve like a normal equation. Think of f(x) a your y because that's basically what it is. If it helps, the equation is basically:
y=2x-2 so you would just solve for y by plugging in -1 into x.

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If you subtract 14 from my number and multiply the difference by -4, the result is -40 what is peters number?

alina1380 [7]

Answer:

-104?

Step-by-step explanation:

6 0

3 years ago

Solve by completing the square? Could you please work it out step-by-step?

DaniilM [7]

16 n^2 -10n + 129 = 8n^2 -8

We collect the terms:
8n^2 -10n + 137 = 0

The steps for completing the square:

1) Move the "non X" (or "non N") term to the right:

8n^2 -10n = -137

2) Divide the equation by the coefficient of N² which in this case is 8
n^2 -1.2n = -17.125 

3) Take the coefficient of "N"; divide it by 2; square it; add it to both sides of the equation.
-1.2 / 2 = -.6
-.6^2 = .36


n^2 -1.2n +.36 = -17.125 +.36

Take the square root of both sides:
(n-.6)*(n-.6) = sq root( -16.765 )
That's about as far as I can go.

4 0

3 years ago

HELP DOES ANYONE KNOW “?”

lakkis [162]

Answer:

hope it helps...any queries comment me!!!