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Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm