The point (-2 5) is reflected across the y-axis

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Step by step explanation pls for 10 pts the length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?