Solve the equation 3/4x - 5 = x give your answers correct to 2 decimal places

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?