Amonstertruck tire has a radius of 33 inches . which measure represents an approximation of the circumference of the tire?

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?

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

Zach spent 2/3 hour reading on friday a 11/3 hlurs reading on saturday. how much more time did he read on saturday tha on friday