A boat sails from a port, P, and sails due north for 30 km to a point Q. It then changes direction and sails 45 km due west to a third point, R.
(a) Draw a diagram showing the route of the ship labelling the points P, Q and R.
(b) Calculate the distance PR, correct to the nearest 0.1km.

Witch represents the inverse of the function f(x)=1/4x-12

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.