A rod of 12 5 1 m long was painted with different colors. The top 4 9 5 m was colored green, the middle 3 3 2 m was colored red and the remaining portion was colored blue. What length of the rod was colored blue?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Give me the equations of two lines that have the same slope but are not parallel.

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?