Suppose that receiving stations XY, and Z are located on a coordinater plane at the points (7, 4), (- 9, - 4)(- 3, 9) respectively. The epicenter of an earthquake is determined to be 5 units from X. 13 units from and 10 units from Z. Where on the coordinate plane is the epicenter located

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Solve for x and y a x= 13.3 y= 16.7 b x= 23.3 y= 12.5 c x= 7.5 y= 16.7 d x=7.5 y= 12.5

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?