In calculus, why can we treat the dy and dx as if they are parts of fractions, multiplying both sides by dx in separable differential equations for instance.

What are the coordinates of the hole in the graph of the function f(x) ? f(x)=x2−9x−3 enter your answer in the boxes.

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.

Apackage of orgainc strwberries costs $1.50 while there in season and $2.25 when not in season what the percent increase