Solve the given system of equations algebraically. Then sketch a graph to verify your solution or to show that no real solution exists. [Show all work.]

x^2 - 2x + y^2 + 4y - 4 = 0
x^2 + y^2 = 6

What is the value of  y  in the solution to the system of equations? x  +  y  =  12x  –  3y  =  –30a. –8b. –3c. 3d. 8

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

How is working backward similar to solving an equation?