Please help me i think i did it wrong, i got

2.2571... but i think is wrong

x ≈ - 2.289

Step-by-step explanation:

Given

- 35 = 3x³ + 1 ( subtract 1 from both sides )

- 36 = 3x³ ( divide both sides by 3 )

- 12 = x³ ( take the cube root of both sides )

= x , thus

x ≈ - 2.289 ( to 3 dec. places )

-2.289

Step-by-step explanation:

1) The first thing we must do is try to get x by itself

    3x^3 + 1 = -35

    3x^3 = -36

    x^3 = -12

2) Now all we have to do is take the cube root of x and -12 to get your answer (this part you'll have to do on a calculator)

    x = -2.289...

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answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0