Solve for x.
-3x-8+6=7
А. x= -7/5
B. x= -1/3
C. x=5
D. x=45

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

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?

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take