2. Evaluate 2w-?zº for w= 10 and z = 2. a.
1
200
b.
18181318
50
1
25
C.
d.
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?

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

Michelle is planting flowers in her garden. she wants the ratio of daises to carnations to be 3 to 2. michelle wants to plant a total of 35 flowers. how many daises should she plant?