Ответ учителя по предмету Геометрия
ищем координаты точки М -2=(5+х)/2 …..х=-5-4=-9….3=(4+у)/2…..у=6-4=2…
М(-9;2)
тепрь ищем координаты точки С ( используем формулы координат середины отрезка) -9=(5+х)/2…х=-18-5=-23…..2=(4+у)/2….у=4-4=0..
.С(-23;0)
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Gavin knocked on the front door of the cottage,but Mrs Foster didn’t open it at once, like she usually did. «Gran! are you there?» no one answered . gavin waited for a moment. he couldn’t hear a sound. «Maybe she can’t hear me,»he thought. he tried the door. it wasn’t locked so he opened it and went inside. The room was empty. «Gran! Where are you? It’s me, Gavin.» No one was there , not even Tinker,the cat. Gavin looked round the warm, cosy little room. The fire was still burning brightly. The table was set for two people and he could smell a delicious smell coming from the tiny kitchen. he thought:»Where is she? And where’s Tinker?» He ran upstairs and looked quickly into the two tiny bedrooms. -Are you there,Gran? Nobody answered.
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