What number must be subtracted from each of the numbers 31,19,13 and 10 so that they are in proportion

Toyland is having a sale. all items are 20% off. how much will you save on an item that usually sells for 95$ explain your

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

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours