Determine between which consecutive integers the real zeros of f(x)=2x^2-5x+1 are located a. between 0& 1 and 1& 2 c. between 0& 1 and 2& 3 b. between -1& 0 and 2& 3 d. between 1& 2 and 2& 3

Answer question above and explain each step : )

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Ill mark the brainliest if you me with the these three questions 7,8,9