A dairy farmer wants to mix a 45% protein supplement and a standard 20% protein ration to make 1800 pounds of a high-grade 30% protein ration. How many pounds of each should he use?

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?

Find the missing variable for a parallelogram: a = latex: 32in^2 32 i n 2 h = b = 6.3 in (1in=2.54cm)

Solve -.016x= -16. need solving this