A random sample of 192 college students is chosen. Assume the population standard deviation of SAT math scores is 12. Find the margin of error for the 95% confidence level used to estimate the population mean SAT score of all students.

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Abcd ≅ klmn ≅ pqrs ≅ wxyz given that information, which figures are reflections of abcd?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?