Solve using augmented matrix methods. 16x_1+ 12x_2 = 4 -8x_1-6x_2 =-2 select the correct choice below and, if necessary, fill in the answer box to complete your choice. a. the unique solution is x, ad2(simplity your answer) the system has infinitely many solutions. the solution is x1 = and x2-t. (simplify your answer. type an expression using t as the variable. do not factor) b. c. there is no solution

do your own work and don"t cheat.

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.