Question

Ma ajuta si pe mine cineva la exercitiul 11 ????

Answer 1

11.) P= 25 cm

a, b, c => laturi

a= 8 cm

P= a+b+c

25= 8+b+c

b+c= 25-8

b+c= 17 (suma celorlalte 2 laturi)

b=> x

c=> x+1

x+x+1= 17

2x+1= 17

2x= 17-1

2x= 16

x= 16/2

x= 8 (latura b= 8 cm)

x+1= 9 (latura c= 9 cm)