Write the equation in standard form ax + by = 0
y=2x+5

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?

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !