Exercice 4 pour avoir 20 :) Les hypothèses sont les suivantes : les longueurs OA et OC sont égales; les longueurs OB et OD sont égales; I est le milieu du segment [DA] et l'angle COA [ est droit. Montrer que les droites (OI) et (CB) sont perpendiculaires.

Josephine has a great garden with and area of 2x2 + x - 6 square feet

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?