4. visit the go-back-n java applet uploaded on moodle page of csi 2470. a. have the source send five packets, and then pause the animation before any of the five packets reach the destination. then kill the first packet and resume the animation. describe what happens. b. repeat the experiment, but now let the first packet reach the destination and kill the first acknowledgment. describe again what happens. c. finally, try sending six packets. what happens? . b) now visit selective repeat applet. repeat above three steps (step a, b and c) , but now with the selective repeat java applet. how are selective repeat and go-back-n different

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α. part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part b suppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part c now try a numerical problem. what is the direction of the vector w = < -1, 6 > ?

3c2 + 2d)(–5c2 + d) select all of the partial products for the multiplication problem above.