Alyssa is making a paper dragon puppet as part of her family’s Chinese New Year celebration. She lays her tissue paper over the coordinate plane. Then she draws figure WXYZ for one of the dragon’s eyes. To make the other eye, she reflects figure WXYZ across the x-axis to form the image, figure W9X9Y9Z9 What are the coordinates of the vertices of figure W9X9Y9Z9? Picture It You can draw the image in the coordinate plane. In this case, the x-axis is the line of reflection. flip x y O 2 52225 2 5 W X Y X’ Y’ Z’ W’ Z line of reflection 25 22 Model It You can now identify the coordinates of the vertices of the image. Make a table to compare corresponding vertices. WXYZ W(23, 4) X(21, 4)Y(22, 1)Z(24, 3) W9X9Y9Z9 W9(23, 24) X9(21, 24) LESSON 2 Work with Single Rigid Transformations in the Coordinate Plane

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.

Ashielded metal arc-welding operation is accomplished in a work cell by a fitter and a welder. the fitter takes 5.5 min to load components into the welding fixture at the beginning of the work cycle, and 1.5 min to unload the completed weldment at the end of the cycle. the total ength of the weld seams 1200 mm, and the travel speed used by the welder averages 300 mm/min. every 600 mm of seam length, the welding stick must be changed, which takes 0.8 min. while the fitter is working, the welder is idle (resting): and while the welder is working the fitter is idle. (a) determine the average arc-on time as a fraction of the work cycle time. (b) how much improvement in arc-on time would result if the welder used flux-cored arc welding (manually operated), given that the spool of weld wire must be changed every 10 weldments, and it takes the welder 5.0 min to accomplish the change? (c) what are the production rates for these two cases (weldments completed per hour)? attach your work and solutions.