alright ya'll, that is what I am going to start using as people in America say xD, because some people told me to quit saying love after I answer everything ;-;, so YA'LL, how are you guys today? xD

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

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?

Three times the sum of a number and seven is negative thirty-six. what is the number?