Which statement can be used to prove that the two triangles are congruent? A) SAS Postulate
B) SSS Postulate
C) HL Theorem
D) ASA Postulate​

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-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11-1 > 1-1+a

-12 > a

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,