Предмет: Математика, автор: ponponich63

СРОЧНО ПОМОГИТЕ!!!! даю 40 балов​

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Ответы

Автор ответа: zlatapepsi
0

Ответ:

1. Г

2. 2а+4б=15

тогда а+2б=7.5

тогда а =7.5-2б

5. мн - у

нп - у-3

пк - 1.25у

мк- 1.25у + 1

у+у-3+1.25у+1.25у+1=16

4.5у-2=16/+2

4.5у=18/:4.5

у=4

MN = 4cm

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