In problems 19 and 20 verify that the indicated expression is an implicit solution of the given first-order differential equa- tion. find at least one explicit solution y = $(x) in each case.

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2 + 9 = −26 −3 − 7 = 13

Acircle has a diameter of 10 what is the area of the circle? use 3.14 for pi. round to the nearest hundredth