Solve the system using either gaussian elimination with back-substitution or gauss-jordan elimination. (if there is no solution, enter no solution. if there are an infinite number of solutions, set x3 and solve for x1 and x2. x1-3x3 =-5 3x1 x2 2x34 2x1 + 2x2 + x3 = 7 need ? read it talk to a tutor submit answer save progress practice another version 1 points larlinalg8 1.2.033 solve the system using either gaussian elimination with back-substitution or gauss-jordan elimination. (if there is no solution, enter no solution. if the system has an infinite number of solutions, express x, x2, and x3 in terms of the parameter t.) my notes ask your teach 2x1+ 4x1-3x2 + 7x3 = 2 8x1 - 9x2 15x3 12 3x33 (x1, x2, x3) -

x1=-4/5, x2=18/5 and x3=7/5

Step-by-step explanation:

you can do linear combination between the rows:

2nd row=R2-3R1 and 3th row=R3-2R1

3th row=(3R2-R3)/15

1st row=R1+3R3 and R2-11R3

x1=-4/5, x2=18/5 and x3=7/5

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.