Find the HCF of 56 and 140

What point is the projection of q on a) r b) s c) t

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?

What additional information could be used to prove abc =mqr using sas? check all that apply.