Let f be the function given below. What is the value of z for which f is differentiable at x=-2? f(x) = {wx+4 for x<-2, -3x^2+z for x≥-2}

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?

Human body temperatures have a mean of 98.20° f and a standard deviation of 0.62°. sally's temperature can be described by z = 1.4. what is her temperature? round your answer to the nearest hundredth. 99.07°f 97.33°f 99.60°f 100.45°f

Plz hurry evaluate the expression a+b where a=8 and b=19