Atrapezoid with an area of 166.75 in has bases that measure 21 in and 8 in find the height of the trapezoid

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).

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

28 x 12 + 34 = ? it's for a test that if i fail on i will not proceed into the honor roll society i always dreamed of!me! worth 50 !