Washington, DC, is located at about 75 W longitude and 38°N latitude San Francisco is near 122-w longitude and 38°N latitude. Estimate how many minutes later the sun rises in San Francisco than
Washington, DC About how far apart would you estimate these cities to be? (Assume you know the
length of a day and the approximate diameter of the earth )

Liesl grew 7/12 of a foot in one year. her little sister grew 1/3 of a foot during that same year. how much more did liesl grow than her little sister did

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?