The amount of a certain bacteria y in a petri dish grows accused riding to the equation dy/dt=ky, where k is a constant and t is measured in hours. if the amount of bacteria triples in 10 hours, then k=?

The ratio of blue cards to green cards is 2 to 5. there are 8 blue cards. complete the diagram and explain how you can find the number of green cards.

What number should be added to both sides of the equation to complete this square? x^2-10x=7

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).