Who ever gets this wright first gets a

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).

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.