A random sample of 70 observations produced a mean of x¯¯¯=22.2 from a population with a normal distribution and a standard deviation σ=3.83.

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.