Write the given second order equation as its equivalent system of first order equations. u′′+4u′+6u=0 use v to represent the "velocity function", i. e. v=u′(t). use v and u for the two functions, rather than u(t) and v(t). (the latter confuses webwork. functions like sin(t) are now write the system using matrices

An equation representing lyle’s hedge-trimming business is a = 12n - 300 where a is the amount of profit or loss in dollars and n is the number of hedges trimmed. how would the graph of lyle’s business change if the equation a = 10n - 300 represented his business? the graph would be flatter. the graph would be steeper. the graph would start closer to the origin. the graph would start lower on the y-axis.

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?