I need the answers as soon as possible.Thank you for the help.

Problem set # 16 1. Salve the linear system using Gauss'method: 2x, +x, +x, = 20 2. Solve the equation cos(x + 0.3)--r+1 by Newton's method (absolute error -0.00001 ). 3. Solve the Cauchy problem r'+xy-2y 6x.1)1,y) graphs of y(x)and v'ex). on the interval (1.7). Plot the 4. Using secant method find the smallest positive. number a such that (absolute error = 0.0001 ). 5 Solve the system using the method of simple iteration (initial approximation z/"--25, x,"-29, x30) =-0.5, the error = 0.001 )