A man is37years old and his child is eight. how many years ago was the product of their ages 96​

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?

Which of the following vectors are orthogonal to (2,1)? check all that apply

Me i'm timed right now! a. (0,-5)b. (0,-3)c. (0,3) d. (0,5)