Solve the system of equations  -3a-4b+2c=28  a+3b-4c=-31  2a+3c=11

Determine whether triangle tjd is congruent to triangle sek  givent (-4,-2), j (0,5), d (1,-1), s (-1,3), e (3,10), k (4,4)and explain the reason.  select one: a. yes, by sssb. no, by aasc. no, by asad. yes, by sas

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years