Two cities are 1300km apart and lie on the same north-south line. The latitude of the northermost city is 24degree N. What is the latitude of the other city? The radius of the earth is approximately 6400km.

Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

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?

Combine like terms to make a simpler expression 3z+z