Two cuboid-shaped metal bars are the same size. they are 12.4cm long, 5.6cm wide and 2.5cm thick. one bar is iron with a density of 7.9g/cm3 and the other is copper with a density of 9.0g/cm3. what is the difference in there masses to the nearest gram?

When only separate discreet points are graphed it is called?

What is the value of the expression below? 148+(-6)| + |– 35= 7|

Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. here are data on the "penetrability" of the same type of soil at two levels of compression. penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. compressed soil 2.85 2.66 3 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 intermediate soil 3.17 3.37 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 use the data, omitting the high outlier, to give a 95% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. compute degrees of freedom using the conservative method. interval: to