Question

va rog sa nu ignorați!
Dau 5✰, si follow​

Answer 1

un triunghi are 180⁰

a) 180⁰=x+10⁰+x⁰

2x=170⁰

x=170⁰:2

x=85⁰

Verificare:

x+10⁰+x⁰=180⁰

85⁰+10⁰+85⁰=180⁰

95⁰+85⁰=180⁰

180⁰=180⁰ adevărat

b)180⁰=52⁰+80⁰-x

180⁰=132⁰-x

-x=180⁰-132⁰

-x=48

x= -48

Verificare:

180⁰=52⁰+80⁰-x⁰

180⁰=132⁰-(-48⁰)

180⁰=132+48⁰

180⁰=180⁰ adevărat

c)180⁰=x+16⁰+2x+14⁰

180⁰=3x+30⁰

150⁰=3x⁰

x=150⁰:3

x=50⁰

Verificare:

180⁰=x+16+2x+14⁰

180⁰=50⁰+16⁰+2×50⁰+14⁰

180⁰=66⁰+114⁰

180⁰=180⁰ adevărat

d)180⁰=2x⁰+x⁰

180⁰=3x⁰

x=180⁰:3

x=60⁰

Verificare:

180⁰=2x⁰+x⁰

180⁰=2×60⁰+1×60⁰

180⁰=120⁰+60⁰

180⁰=180⁰ adevărat

Sper că te-am ajutat!