Suppose a railroad rail is 2 kilometers and it expands on a hot day by 10 centimeters in length. Approximately how many meters would the center of the rail rise above the ground?

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55