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kirill [66]
4 years ago
15

I will give out brainliest for the first answer HELP ASAP!!!!

Mathematics
2 answers:
Inessa05 [86]4 years ago
6 0

Answer:

<h2>x = 40</h2>

Step-by-step explanation:

fx=2x-50    

Find x when fx=30

plugin values into the equation

30 = 2x - 50

combine similar term:

30 + 50 = 2x

simplify:

80 = 2x

x = 80/2

x = 40

proof: fx = 30

f(x) = 2x - 50

     = 2(40) - 50

     = 80 - 50

     = 30

30  = 30  ok

Svetllana [295]4 years ago
4 0

Answer:

<h2>x = 40</h2><h2 />

Step-by-step explanation:

fx=2x-50

Find x when fx=30

30 = 2x - 50

add 50 each side

30 + 50 = 2x - 50 + 50

80 = 2x

x = 80 / 2

x = 40

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