Comment on the significance of the estimated coefficients and interpret the meanings of the slope estimates.

Question 4 Question 4. Provide a sketch of a typical cross section of a rural highway described below: Two-lane two-way highway 12 ft lanes @ 2% cross-slope 4ft shoulders @ 4% cross-slope Front slope = 1:4 Back slope = 1:3 Ditch depth = 3ft Ditch width = 1ft

Problem 1: Inputs: ● A = (3, 3) ft B = (9, 12) ft C=(3, 1) ft D = (9, 6) ft this Compute the centroid of the shaded region. For problem you must use the integral method. We will check our answers using another method in the next problem. a) Computex using integrals b) Compute y using integrals y A C y B D X

Problem 1) Determine the x and y coordinates of the centroid( ,ỹ) of the shaded area given below. 1) Find y function first. Note that y is a quadratic function with zero slope at x = 0; 2) Use the formulas for the centroids we developed in class. slopezo y=Ax+Bx+C • C(x, J)