Determine the unknown angle measure in the pentagon

What number should be added to both sides of the equation to complete this square? x^2-10x=7

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?