Evaluate the expression 9- z when z=8

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

Using the information in the customer order, determine the length and width of the garden. enter the dimensions. length: feet width: feet