Find the center and radius: 2x² +2y² -2x -2y -1 = 0​

Matt and brian were solving a system of equations. they both noticed that the two lines had the same slope. brian said that because each line in the system had the same slope, the two lines had to be parallel, which meant the solution to the system was "no solution" matt disagreed, and said they should also look at the y-intercepts before determining how many solutions there were. who is correct?

Suppose the probability of selling a car today is 0.28. find the odds against selling a car today.

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?