An important factor in solid missile fuel is the particle size distribution. significant problems occur if the particle sizes are too large. from past production data, it has been determined that the particle size (in µm, i. e., micrometers) distribution is characterized by f(x) =(3x−4, x > 1 0, elsewhere.
(a) find the mean particle size.
(b) find the variance and standard deviation of the particle size.

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step-by-step explanation:

answer by yourhope:

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x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function