You need to find the total distance and the total time. The total distance is two times the distance to school, 2d.s=d/t=>t=d/sWhere s is speed, d is distance and t is time. So the time taken to get to school is:d/s1and the time taken to get back is:d/s2so the total time is:d/s1+d/s2=d(1/s1+1/s2)So, as speed = distance/time, divide the total distance by the total time:2d/d(1/s1+1/s2)=2/(1/s1+1/s2)=2/(1/20+1/40)=80/3≈26.7km/hr
Nadia's figure has planes of symmetry that include the axis of symmetry. The planes of symmetry of Jon's figure can be described the same way.
In addition, Jon's figure has as a plane of symmetry the plane perpendicular to the axis of symmetry that includes the longest diameter of his torus.
Answer:
graphing by hand it probably can help or you could do it your way if u want
6000 is the correct answer
