Resolver por sustitucion
y=x+8
x+y=2

x=-3, y=5. (-3, 5).

Step-by-step explanation:

y=x+8

x+y=2

x+(x+8)=2

x+x+8=2

2x+8=2

2x=2-8

2x=-6

x=-6/2

x=-3

substitute x=-3,

y=-3+8=5

(-3, 5).

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation: