Use gaussian elimination to find the complete solution to the system of equations, or state that none exists. show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

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

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.