Which coordinates best represent the vertex of the graph? O (-4, 4, 0)
(-3, 2)
Ο Ο Ο
(-1.0, 0)
(0, -2)

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?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Kayla has a $500 budget for the school party. she paid $150 for the decorations. food will cost $5.50 per student. what inequality represents the number of students, s, that can attend the party?