jerzie53
16.07.2020 •
Mathematics
Mrs. Healthy walked along a running track at 2000 m/h. She took 4 min more than Mrs. Wise to walk the entire length of the track once. If the track is 400 m long, Mrs. Wise's average walking speed was ___m/min.
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Ответ:
Nose = ((1+1/2)*1)/2 = 0.75^2
Mouth = 3*(1ft/2)/2= 0.75ft^2
Board = 2/2/3*3 =8ft^2
Area = 8-0.5-0.75-0.75 = 6ft^2