Natalie is hiking up a mountain while Simone is hiking down. when Natalie begins to ascend. Simone begins to descend at the same time. the graph shows Natalie elevation in feet overtime in minutes.

Find the quotient. 50a2 – 98b2 -5a +7b

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?

Polygon hh is a scaled copy of polygon gg using a scale factor of 1/4. polygon h's area is what fraction of polygon g's area?