If 6x - y = 21 and -x + 6y = 14, what is the value of x - y?

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct