Hi there u can brainliest answer and rate and thx ! # simplify the following expression. (43)5 ÷ 415 all santa : )

2÷6+1/2 to the second power plus one

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).

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form