What is the standard form of an ellipse with foci at (0, ±2), and vertices at (0, ±4)?

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Given: ∆mop p∆mop =12+4 3 m∠p = 90°, m∠m = 60° find: mp, mo

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?