Find the missing length (in cm) using the Pytheorean Theorm.

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

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals