What is true about posture?

Posture matters a little, but not a lot. Many habitual postures are the result of long-term adaptations to anatomical quirks, and it's difficult and unwise to try to change them. Most other “poor posture” is adaptation to bad ergonomics, which causes postural stress, but isn't poor posture

Step-by-step explanation:

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5