Fill in the blank with a number to make the expression a perfect square. w squared - 4w +

John can eat 10 cookies in 1/2 hr how many cookies can he eat in 45 minutes make a proportion and solve

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

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?