What is the value of “k”?

K Value is a steady state of the heat flow through a unit area of a homogeneous material induced by the unit temperature gradient. It can be determined by the flow of heat from a hotter surface to a colder surface. It is used to describe British thermal unit (BTU) per hour

x² + 11x + 18 < 0  

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

solution: (-9, -2)

step-by-step explanation: