Solve the 3x3 system shown below. Enter the values of x, y, and z. X+2y-z=-3 2x-y+z=5 x-y+z=4

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Abook store is having a 30 perscent off sale. diary of the wimpy kid books are now 6.30 dollars each what was the original price of the books