The function w =-39+ 3/2t where t is the actual air temperature, gives the approximate wind chill temperature w when the wind speed is 20 mi/h. Find the
approximate wind chill temperature for 10 °F with a 20 mi/h wind.

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).

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?